diff --git a/src/main/config/config_streamer.c b/src/main/config/config_streamer.c
index d519d61b42..74961fb3c3 100644
--- a/src/main/config/config_streamer.c
+++ b/src/main/config/config_streamer.c
@@ -37,10 +37,6 @@ uint8_t eepromData[EEPROM_SIZE];
 #endif
 #endif
 
-#if !defined(FLASH_PAGE_SIZE)
-#error "Flash page size not defined for target."
-#endif
-
 void config_streamer_init(config_streamer_t *c)
 {
     memset(c, 0, sizeof(*c));
diff --git a/src/main/fc/init.c b/src/main/fc/init.c
index 67c21d7f20..e6e90800fe 100644
--- a/src/main/fc/init.c
+++ b/src/main/fc/init.c
@@ -211,6 +211,9 @@ static void configureSPIBusses(void)
 #ifdef USE_SPI
     spiPreinit();
 
+#ifdef USE_SPI_DEVICE_0
+    spiInit(SPIDEV_0);
+#endif
 #ifdef USE_SPI_DEVICE_1
     spiInit(SPIDEV_1);
 #endif
diff --git a/src/main/flight/alt_hold_multirotor.c b/src/main/flight/alt_hold_multirotor.c
index 7c089cb165..e1547638f7 100644
--- a/src/main/flight/alt_hold_multirotor.c
+++ b/src/main/flight/alt_hold_multirotor.c
@@ -128,7 +128,7 @@ void altHoldUpdateTargetAltitude(void)
     // using maxVelocity means the stick can bring altitude target to current within 1s
     // this constrains the P and I response to user target changes, but not D of F responses
     // Range is compared to distance that might be traveled in one second
-    if (fabsf(getAltitudeCm() - altHold.targetAltitudeCm) < altHold.maxVelocity * 1.0 /* s */) {
+    if (fabsf(getAltitudeCm() - altHold.targetAltitudeCm) < altHold.maxVelocity * 1.0f /* s */) {
         altHold.targetAltitudeCm += altHold.targetVelocity * taskIntervalSeconds;
     }
 }
diff --git a/src/platform/common/stm32/config_flash.c b/src/platform/common/stm32/config_flash.c
index e1f6b484ed..c94fb082b1 100644
--- a/src/platform/common/stm32/config_flash.c
+++ b/src/platform/common/stm32/config_flash.c
@@ -27,6 +27,10 @@
 
 #if defined(CONFIG_IN_FLASH)
 
+#if !defined(FLASH_PAGE_SIZE)
+#error "Flash page size not defined for STM (or clone) target."
+#endif
+
 #if defined(STM32F745xx) || defined(STM32F746xx) || defined(STM32F765xx)
 /*
 Sector 0    0x08000000 - 0x08007FFF 32 Kbytes