diff --git a/radio/src/audio_arm.h b/radio/src/audio_arm.h
index 14009f5f8..3dbfc5911 100644
--- a/radio/src/audio_arm.h
+++ b/radio/src/audio_arm.h
@@ -173,14 +173,25 @@ struct AudioFragment {
     strcpy(file, filename);
   }
 
-  void clear() { memset(this, 0, sizeof(AudioFragment)); };
+  void clear()
+  {
+    memset(reinterpret_cast<void*>(this), 0, sizeof(AudioFragment));
+  }
 };
 
 class ToneContext {
   public:
 
-    inline void clear() { memset(this, 0, sizeof(ToneContext)); };
-    bool isFree() const { return fragment.type == FRAGMENT_EMPTY; };
+    inline void clear()
+    {
+      memset(reinterpret_cast<void*>(this), 0, sizeof(ToneContext));
+    }
+
+    bool isFree() const
+    {
+      return fragment.type == FRAGMENT_EMPTY;
+    }
+
     int mixBuffer(AudioBuffer *buffer, int volume, unsigned int fade);
 
     void setFragment(uint16_t freq, uint16_t duration, uint16_t pause, uint8_t repeat, int8_t freqIncr, bool reset, uint8_t id=0)
@@ -265,8 +276,10 @@ class MixedContext {
 
     int mixBuffer(AudioBuffer *buffer, int toneVolume, int wavVolume, unsigned int fade)
     {
-      if (isTone()) return tone.mixBuffer(buffer, toneVolume, fade);
-      else if (isFile()) return wav.mixBuffer(buffer, wavVolume, fade);
+      if (isTone())
+        return tone.mixBuffer(buffer, toneVolume, fade);
+      else if (isFile())
+        return wav.mixBuffer(buffer, wavVolume, fade);
       return 0;
     }
 
@@ -296,14 +309,17 @@ class AudioBufferFifo {
     {
       return (idx >= AUDIO_BUFFER_COUNT-1 ? 0 : idx+1);
     }
+
     bool full() const
     {
       return bufferFull;
     }
+
     bool empty() const
     {
       return (readIdx == writeIdx) && !bufferFull;
     }
+
     uint8_t used() const
     {
       return bufferFull ? AUDIO_BUFFER_COUNT : writeIdx - readIdx;
diff --git a/radio/src/datastructs.h b/radio/src/datastructs.h
index 28c39bdbb..554867789 100644
--- a/radio/src/datastructs.h
+++ b/radio/src/datastructs.h
@@ -509,8 +509,9 @@ typedef uint8_t swarnenable_t;
 #if defined(PCBHORUS)
 #include "gui/480x272/layout.h"
 #include "gui/480x272/topbar.h"
+#define LAYOUT_NAME_LEN 10
 PACK(struct CustomScreenData {
-  char layoutName[10];
+  char layoutName[LAYOUT_NAME_LEN];
   Layout::PersistentData layoutData;
 });
 #define CUSTOM_SCREENS_DATA \
@@ -690,8 +691,9 @@ PACK(struct TrainerData {
 
 #if defined(PCBHORUS)
   #include "gui/480x272/theme.h"
+  #define THEME_NAME_LEN 8
   #define THEME_DATA \
-    NOBACKUP(char themeName[8]); \
+    NOBACKUP(char themeName[THEME_NAME_LEN]); \
     NOBACKUP(Theme::PersistentData themeData);
 #else
   #define THEME_DATA
diff --git a/radio/src/functions.cpp b/radio/src/functions.cpp
index 675a9a214..d46766dfd 100644
--- a/radio/src/functions.cpp
+++ b/radio/src/functions.cpp
@@ -90,12 +90,12 @@ PLAY_FUNCTION(playValue, source_t idx)
 void playCustomFunctionFile(const CustomFunctionData * sd, uint8_t id)
 {
   if (sd->play.name[0] != '\0') {
-    char filename[sizeof(SOUNDS_PATH)+sizeof(sd->play.name)+sizeof(SOUNDS_EXT)] = SOUNDS_PATH "/";
-    strncpy(filename+SOUNDS_PATH_LNG_OFS, currentLanguagePack->id, 2);
-    strncpy(filename+sizeof(SOUNDS_PATH), sd->play.name, sizeof(sd->play.name));
-    filename[sizeof(SOUNDS_PATH)+sizeof(sd->play.name)] = '\0';
-    strcat(filename+sizeof(SOUNDS_PATH), SOUNDS_EXT);
-    PLAY_FILE(filename, sd->func==FUNC_BACKGND_MUSIC ? PLAY_BACKGROUND : 0, id);
+    char filename[sizeof(SOUNDS_PATH) + LEN_FUNCTION_NAME + sizeof(SOUNDS_EXT)] = SOUNDS_PATH "/";
+    strncpy(filename + SOUNDS_PATH_LNG_OFS, currentLanguagePack->id, 2);
+    strncpy(filename + sizeof(SOUNDS_PATH), sd->play.name, LEN_FUNCTION_NAME);
+    filename[sizeof(SOUNDS_PATH) + LEN_FUNCTION_NAME] = '\0';
+    strcat(filename + sizeof(SOUNDS_PATH), SOUNDS_EXT);
+    PLAY_FILE(filename, sd->func == FUNC_BACKGND_MUSIC ? PLAY_BACKGROUND : 0, id);
   }
 }
 
diff --git a/radio/src/gui/212x64/lcd.cpp b/radio/src/gui/212x64/lcd.cpp
index b82106e75..9d22ca982 100644
--- a/radio/src/gui/212x64/lcd.cpp
+++ b/radio/src/gui/212x64/lcd.cpp
@@ -36,7 +36,7 @@ inline bool lcdIsPointOutside(coord_t x, coord_t y)
 
 void lcdClear()
 {
-  memset(displayBuf, 0, DISPLAY_BUFFER_SIZE);
+  memset(displayBuf, 0, DISPLAY_BUFFER_SIZE * sizeof(display_t));
 }
 
 coord_t lcdLastRightPos;
diff --git a/radio/src/gui/480x272/layout.cpp b/radio/src/gui/480x272/layout.cpp
index 0176baddc..4366ac475 100644
--- a/radio/src/gui/480x272/layout.cpp
+++ b/radio/src/gui/480x272/layout.cpp
@@ -56,9 +56,9 @@ void loadCustomScreens()
 {
   for (unsigned int i=0; i<MAX_CUSTOM_SCREENS; i++) {
     delete customScreens[i];
-    char name[sizeof(g_model.screenData[i].layoutName)+1];
+    char name[LAYOUT_NAME_LEN + 1];
     memset(name, 0, sizeof(name));
-    strncpy(name, g_model.screenData[i].layoutName, sizeof(g_model.screenData[i].layoutName));
+    strncpy(name, g_model.screenData[i].layoutName, LAYOUT_NAME_LEN);
     customScreens[i] = loadLayout(name, &g_model.screenData[i].layoutData);
   }
 
diff --git a/radio/src/gui/480x272/lcd.h b/radio/src/gui/480x272/lcd.h
index b5dd216aa..873a27453 100644
--- a/radio/src/gui/480x272/lcd.h
+++ b/radio/src/gui/480x272/lcd.h
@@ -105,7 +105,7 @@ enum FontSizeIndex {
 #include "colors.h"
 
 #define DISPLAY_PIXELS_COUNT           (LCD_W*LCD_H)
-#define DISPLAY_BUFFER_SIZE            (sizeof(display_t)*DISPLAY_PIXELS_COUNT)
+#define DISPLAY_BUFFER_SIZE            (DISPLAY_PIXELS_COUNT)
 
 #if defined(SIMU)
 extern display_t displayBuf[DISPLAY_BUFFER_SIZE];
diff --git a/radio/src/gui/480x272/model_select.cpp b/radio/src/gui/480x272/model_select.cpp
index 10ca28a14..b79963423 100644
--- a/radio/src/gui/480x272/model_select.cpp
+++ b/radio/src/gui/480x272/model_select.cpp
@@ -176,7 +176,7 @@ bool menuModelWizard(event_t event)
     }
     break;
   }
-  strncpy(wizpath, WIZARD_PATH, sizeof(WIZARD_PATH));
+  strcpy(wizpath, WIZARD_PATH);
   strcpy(&wizpath[sizeof(WIZARD_PATH)-1], "/");
   lcdDrawSolidFilledRect(0, 0, LCD_W, LCD_H, TEXT_BGCOLOR);
   lcd->drawBitmap(0, 0, modelselWizardBackground);
diff --git a/radio/src/gui/480x272/theme.cpp b/radio/src/gui/480x272/theme.cpp
index 260ecefe4..e4a60bec9 100644
--- a/radio/src/gui/480x272/theme.cpp
+++ b/radio/src/gui/480x272/theme.cpp
@@ -144,9 +144,9 @@ void loadTheme(Theme * new_theme)
 
 void loadTheme()
 {
-  char name[sizeof(g_eeGeneral.themeName)+1];
+  char name[THEME_NAME_LEN + 1];
   memset(name, 0, sizeof(name));
-  strncpy(name, g_eeGeneral.themeName, sizeof(g_eeGeneral.themeName));
+  strncpy(name, g_eeGeneral.themeName, THEME_NAME_LEN);
   Theme * new_theme = getTheme(name);
   if (new_theme) {
     loadTheme(new_theme);
diff --git a/radio/src/gui/480x272/widgets_container.h b/radio/src/gui/480x272/widgets_container.h
index 13c02f570..c2fbd9cdd 100644
--- a/radio/src/gui/480x272/widgets_container.h
+++ b/radio/src/gui/480x272/widgets_container.h
@@ -47,12 +47,14 @@ class WidgetsContainerInterface
     Widget ** widgets;
 };
 
+#define WIDGET_NAME_LEN   10
+
 template<int N, int O>
 class WidgetsContainer: public WidgetsContainerInterface
 {
   public:
     struct ZonePersistentData {
-      char widgetName[10];
+      char widgetName[WIDGET_NAME_LEN];
       Widget::PersistentData widgetData;
     };
 
@@ -104,9 +106,9 @@ class WidgetsContainer: public WidgetsContainerInterface
         for (unsigned int i=0; i<count; i++) {
           delete widgets[i];
           if (persistentData->zones[i].widgetName[0]) {
-            char name[sizeof(persistentData->zones[i].widgetName)+1];
+            char name[WIDGET_NAME_LEN + 1];
             memset(name, 0, sizeof(name));
-            strncpy(name, persistentData->zones[i].widgetName, sizeof(persistentData->zones[i].widgetName));
+            strncpy(name, persistentData->zones[i].widgetName, WIDGET_NAME_LEN);
             widgets[i] = loadWidget(name, getZone(i), &persistentData->zones[i].widgetData);
           }
           else {
diff --git a/radio/src/lua/interface.cpp b/radio/src/lua/interface.cpp
index 513d0ce8e..235e83afa 100644
--- a/radio/src/lua/interface.cpp
+++ b/radio/src/lua/interface.cpp
@@ -620,10 +620,10 @@ bool luaLoadMixScript(uint8_t index)
     ScriptInputsOutputs * sio = &scriptInputsOutputs[index];
     sid.reference = SCRIPT_MIX_FIRST+index;
     sid.state = SCRIPT_NOFILE;
-    char filename[sizeof(SCRIPTS_MIXES_PATH)+sizeof(sd.file)+sizeof(SCRIPT_EXT)] = SCRIPTS_MIXES_PATH "/";
-    strncpy(filename+sizeof(SCRIPTS_MIXES_PATH), sd.file, sizeof(sd.file));
-    filename[sizeof(SCRIPTS_MIXES_PATH)+sizeof(sd.file)] = '\0';
-    strcat(filename+sizeof(SCRIPTS_MIXES_PATH), SCRIPT_EXT);
+    char filename[sizeof(SCRIPTS_MIXES_PATH) + LEN_SCRIPT_FILENAME + sizeof(SCRIPT_EXT)] = SCRIPTS_MIXES_PATH "/";
+    strncpy(filename + sizeof(SCRIPTS_MIXES_PATH), sd.file, LEN_SCRIPT_FILENAME);
+    filename[sizeof(SCRIPTS_MIXES_PATH) + LEN_SCRIPT_FILENAME] = '\0';
+    strcat(filename + sizeof(SCRIPTS_MIXES_PATH), SCRIPT_EXT);
     if (luaLoad(lsScripts, filename, sid, sio) == SCRIPT_PANIC) {
       return false;
     }
@@ -643,10 +643,10 @@ bool luaLoadFunctionScript(uint8_t index, uint8_t ref)
       ScriptInternalData & sid = scriptInternalData[luaScriptsCount++];
       sid.reference = ref + index;
       sid.state = SCRIPT_NOFILE;
-      char filename[sizeof(SCRIPTS_FUNCS_PATH)+sizeof(fn.play.name)+sizeof(SCRIPT_EXT)] = SCRIPTS_FUNCS_PATH "/";
-      strncpy(filename+sizeof(SCRIPTS_FUNCS_PATH), fn.play.name, sizeof(fn.play.name));
-      filename[sizeof(SCRIPTS_FUNCS_PATH)+sizeof(fn.play.name)] = '\0';
-      strcat(filename+sizeof(SCRIPTS_FUNCS_PATH), SCRIPT_EXT);
+      char filename[sizeof(SCRIPTS_FUNCS_PATH) + LEN_FUNCTION_NAME + sizeof(SCRIPT_EXT)] = SCRIPTS_FUNCS_PATH "/";
+      strncpy(filename + sizeof(SCRIPTS_FUNCS_PATH), fn.play.name, LEN_FUNCTION_NAME);
+      filename[sizeof(SCRIPTS_FUNCS_PATH) + LEN_FUNCTION_NAME] = '\0';
+      strcat(filename + sizeof(SCRIPTS_FUNCS_PATH), SCRIPT_EXT);
       if (luaLoad(lsScripts, filename, sid) == SCRIPT_PANIC) {
         return false;
       }
diff --git a/radio/src/lua/lua_api.h b/radio/src/lua/lua_api.h
index 7093bcd6d..62887b829 100644
--- a/radio/src/lua/lua_api.h
+++ b/radio/src/lua/lua_api.h
@@ -59,8 +59,8 @@ void luaInitThemesAndWidgets();
 #define lua_pushtableinteger(L, k, v)  (lua_pushstring(L, (k)), lua_pushinteger(L, (v)), lua_settable(L, -3))
 #define lua_pushtablenumber(L, k, v)   (lua_pushstring(L, (k)), lua_pushnumber(L, (v)), lua_settable(L, -3))
 #define lua_pushtablestring(L, k, v)   (lua_pushstring(L, (k)), lua_pushstring(L, (v)), lua_settable(L, -3))
-#define lua_pushtablenzstring(L, k, v) { char tmp[sizeof(v)+1]; strncpy(tmp, (v), sizeof(v)); tmp[sizeof(v)] = '\0'; lua_pushstring(L, (k)); lua_pushstring(L, tmp); lua_settable(L, -3); }
-#define lua_pushtablezstring(L, k, v)  { char tmp[sizeof(v)+1]; zchar2str(tmp, (v), sizeof(v)); lua_pushstring(L, (k)); lua_pushstring(L, tmp); lua_settable(L, -3); }
+#define lua_pushtablenzstring(L, k, v) { char tmp[sizeof(v)+1]; strncpy(tmp, (v), sizeof(tmp)-1); tmp[sizeof(v)] = '\0'; lua_pushstring(L, (k)); lua_pushstring(L, tmp); lua_settable(L, -3); }
+#define lua_pushtablezstring(L, k, v)  { char tmp[sizeof(v)+1]; zchar2str(tmp, (v), sizeof(tmp)-1); lua_pushstring(L, (k)); lua_pushstring(L, tmp); lua_settable(L, -3); }
 #define lua_registerlib(L, name, tab)  (luaL_newmetatable(L, name), luaL_setfuncs(L, tab, 0), lua_setglobal(L, name))
 
 #define RUN_MIX_SCRIPT        (1 << 0)
diff --git a/radio/src/simu.cpp b/radio/src/simu.cpp
index 484c62705..662a8538a 100644
--- a/radio/src/simu.cpp
+++ b/radio/src/simu.cpp
@@ -82,7 +82,7 @@ Open9xSim::Open9xSim(FXApp* a):
   FXMainWindow(a, "OpenTX Simu", NULL, NULL, DECOR_ALL, 20, 90, 0, 0)
 {
   firstTime = true;
-  memset(displayBuf, 0, DISPLAY_BUFFER_SIZE);
+  memset(displayBuf, 0, DISPLAY_BUFFER_SIZE * sizeof(display_t));
   bmp = new FXPPMImage(getApp(),NULL,IMAGE_OWNED|IMAGE_KEEP|IMAGE_SHMI|IMAGE_SHMP, W2, H2);
 
 #if defined(SIMU_AUDIO)
diff --git a/radio/src/targets/horus/lcd_driver.cpp b/radio/src/targets/horus/lcd_driver.cpp
index f138a0df6..110db0007 100644
--- a/radio/src/targets/horus/lcd_driver.cpp
+++ b/radio/src/targets/horus/lcd_driver.cpp
@@ -32,9 +32,9 @@
 #define LCD_FIRST_LAYER                0
 #define LCD_SECOND_LAYER               1
 
-uint8_t LCD_FIRST_FRAME_BUFFER[DISPLAY_BUFFER_SIZE] __SDRAM;
-uint8_t LCD_SECOND_FRAME_BUFFER[DISPLAY_BUFFER_SIZE] __SDRAM;
-uint8_t LCD_BACKUP_FRAME_BUFFER[DISPLAY_BUFFER_SIZE] __SDRAM;
+uint8_t LCD_FIRST_FRAME_BUFFER[DISPLAY_BUFFER_SIZE * sizeof(display_t)] __SDRAM;
+uint8_t LCD_SECOND_FRAME_BUFFER[DISPLAY_BUFFER_SIZE * sizeof(display_t)] __SDRAM;
+uint8_t LCD_BACKUP_FRAME_BUFFER[DISPLAY_BUFFER_SIZE * sizeof(display_t)] __SDRAM;
 
 uint32_t CurrentLayer = LCD_FIRST_LAYER;
 
@@ -562,12 +562,12 @@ void DMAcopy(void * src, void * dest, int len)
 
 void lcdStoreBackupBuffer()
 {
-  DMAcopy(lcd->getData(), LCD_BACKUP_FRAME_BUFFER, DISPLAY_BUFFER_SIZE);
+  DMAcopy(lcd->getData(), LCD_BACKUP_FRAME_BUFFER, DISPLAY_BUFFER_SIZE * sizeof(display_t));
 }
 
 int lcdRestoreBackupBuffer()
 {
-  DMAcopy(LCD_BACKUP_FRAME_BUFFER, lcd->getData(), DISPLAY_BUFFER_SIZE);
+  DMAcopy(LCD_BACKUP_FRAME_BUFFER, lcd->getData(), DISPLAY_BUFFER_SIZE * sizeof(display_t));
   return 1;
 }
 
diff --git a/radio/src/targets/simu/simpgmspace.cpp b/radio/src/targets/simu/simpgmspace.cpp
index 5d9c9e513..641872af6 100644
--- a/radio/src/targets/simu/simpgmspace.cpp
+++ b/radio/src/targets/simu/simpgmspace.cpp
@@ -552,8 +552,8 @@ void lcdRefresh()
 {
   static bool lightEnabled = (bool)isBacklightEnabled();
 
-  if (bool(isBacklightEnabled()) != lightEnabled || memcmp(simuLcdBuf, displayBuf, DISPLAY_BUFFER_SIZE)) {
-    memcpy(simuLcdBuf, displayBuf, DISPLAY_BUFFER_SIZE);
+  if (bool(isBacklightEnabled()) != lightEnabled || memcmp(simuLcdBuf, displayBuf, DISPLAY_BUFFER_SIZE * sizeof(display_t))) {
+    memcpy(simuLcdBuf, displayBuf, DISPLAY_BUFFER_SIZE * sizeof(display_t));
     lightEnabled = (bool)isBacklightEnabled();
     simuLcdRefresh = true;
   }
diff --git a/radio/src/telemetry/telemetry_sensors.h b/radio/src/telemetry/telemetry_sensors.h
index a0f856a87..d891502fb 100644
--- a/radio/src/telemetry/telemetry_sensors.h
+++ b/radio/src/telemetry/telemetry_sensors.h
@@ -91,7 +91,7 @@ class TelemetryItem
 
     void clear()
     {
-      memset(this, 0, sizeof(*this));
+      memset(reinterpret_cast<void*>(this), 0, sizeof(TelemetryItem));
       lastReceived = TELEMETRY_VALUE_UNAVAILABLE;
     }