diff --git a/companion/src/eeprominterface.h b/companion/src/eeprominterface.h
index 14a8793a1..30f81b58c 100644
--- a/companion/src/eeprominterface.h
+++ b/companion/src/eeprominterface.h
@@ -26,6 +26,7 @@
 #include <iostream>
 #include <bitset>
 #include "constants.h"
+#include "../../radio/src/definitions.h"
 #include "simulatorinterface.h"
 
 #define EESIZE_STOCK           2048
diff --git a/companion/src/simulation/simulatorinterface.h b/companion/src/simulation/simulatorinterface.h
index 1f4adf883..9e57c4e70 100644
--- a/companion/src/simulation/simulatorinterface.h
+++ b/companion/src/simulation/simulatorinterface.h
@@ -24,12 +24,7 @@
 #include <QMap>
 #include <algorithm>
 
-#if __GNUC__
-  #define PACK( __Declaration__ ) __Declaration__ __attribute__((__packed__))
-#else
-  #include "../targets/windows/winbuild.h"
-#endif
-
+// TODO can be removed?
 template<class t> t LIMIT(t mi, t x, t ma) { return std::min(std::max(mi, x), ma); }
 
 struct TxInputs
diff --git a/companion/targets/windows/winbuild.h b/companion/targets/windows/winbuild.h
deleted file mode 100644
index 64bdc89bb..000000000
--- a/companion/targets/windows/winbuild.h
+++ /dev/null
@@ -1,34 +0,0 @@
-/*
- * Author - Bertrand Songis <bsongis@gmail.com>
- *
- * Based on th9x -> http://code.google.com/p/th9x/
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- */
-
-#ifndef WINBUILD_H
-#define WINBUILD_H
-
-#define PACK( __Declaration__ ) __pragma( pack(push, 1) ) __Declaration__ __pragma( pack(pop) )
-#undef FORCEINLINE
-#define FORCEINLINE inline
-#define NOINLINE
-
-#define strcasecmp  _stricmp
-#define strncasecmp _tcsnicmp
-#define snprintf    _snprintf
-
-inline double round(double number)
-{
-  return number < 0.0 ? ceil(number - 0.5) : floor(number + 0.5);
-}
-
-#endif
diff --git a/radio/src/datastructs.h b/radio/src/datastructs.h
index 20ec3b0c7..0034a8e20 100644
--- a/radio/src/datastructs.h
+++ b/radio/src/datastructs.h
@@ -66,12 +66,6 @@
   #define NOBACKUP(...)                __VA_ARGS__
 #endif
 
-#if __GNUC__
-  #define PACK( __Declaration__ )      __Declaration__ __attribute__((__packed__))
-#else
-  #define PACK( __Declaration__ )      __pragma( pack(push, 1) ) __Declaration__ __pragma( pack(pop) )
-#endif
-
 #if defined(PCBTARANIS) || defined(PCBHORUS)
 typedef uint16_t source_t;
 #else
diff --git a/radio/src/definitions.h b/radio/src/definitions.h
index 9f95c2ded..47862da04 100644
--- a/radio/src/definitions.h
+++ b/radio/src/definitions.h
@@ -42,9 +42,24 @@
 #endif
 
 #if defined(SIMU) || defined(CPUARM) || GCC_VERSION < 472
-  typedef int32_t int24_t;
+typedef int32_t int24_t;
 #else
-  typedef __int24 int24_t;
+typedef __int24 int24_t;
+#endif
+
+#if __GNUC__
+#define PACK( __Declaration__ )      __Declaration__ __attribute__((__packed__))
+#else
+#define PACK( __Declaration__ )      __pragma( pack(push, 1) ) __Declaration__ __pragma( pack(pop) )
+#endif
+
+#if defined(WIN32)
+#define FORCEINLINE inline
+#define NOINLINE
+#define round(x)    floor(x+0.5)
+#define strcasecmp  _stricmp
+#define strncasecmp _tcsnicmp
+#define snprintf    _snprintf
 #endif
 
 #endif // _DEFINITIONS_H_
diff --git a/radio/src/storage/eeprom_rlc.h b/radio/src/storage/eeprom_rlc.h
index 58af375c7..c1b55d910 100644
--- a/radio/src/storage/eeprom_rlc.h
+++ b/radio/src/storage/eeprom_rlc.h
@@ -21,10 +21,7 @@
 #ifndef _EEPROM_RLC_H_
 #define _EEPROM_RLC_H_
 
-// TODO duplicated
-#ifndef PACK
-#define PACK( __Declaration__ ) __Declaration__ __attribute__((__packed__))
-#endif
+#include "definitions.h"
 
 #if defined(PCBTARANIS)
   #define blkid_t    uint16_t
diff --git a/radio/src/telemetry/frsky.h b/radio/src/telemetry/frsky.h
index b2b74fd5f..86600b03c 100644
--- a/radio/src/telemetry/frsky.h
+++ b/radio/src/telemetry/frsky.h
@@ -21,6 +21,7 @@
 #ifndef _FRSKY_H_
 #define _FRSKY_H_
 
+#include "../definitions.h"
 #include "telemetry_holders.h"
 
 #define FRSKY_SPORT_BAUDRATE      57600
diff --git a/radio/src/thirdparty/Lua/src/lobject.h b/radio/src/thirdparty/Lua/src/lobject.h
index 4a0375464..7e5c03ab4 100644
--- a/radio/src/thirdparty/Lua/src/lobject.h
+++ b/radio/src/thirdparty/Lua/src/lobject.h
@@ -8,13 +8,9 @@
 #ifndef lobject_h
 #define lobject_h
 
-#ifndef PACK
-#define PACK( __Declaration__ ) __Declaration__ __attribute__((__packed__))
-#endif
-
 #include <stdarg.h>
 
-
+#include "definitions.h"
 #include "llimits.h"
 #include "lua.h"