diff --git a/radio/src/targets/taranis/CMakeLists.txt b/radio/src/targets/taranis/CMakeLists.txt
index 4147342c3..409f03ca3 100644
--- a/radio/src/targets/taranis/CMakeLists.txt
+++ b/radio/src/targets/taranis/CMakeLists.txt
@@ -500,6 +500,7 @@ elseif ((CPU_TYPE_FULL STREQUAL STM32F407xE) OR (CPU_TYPE_FULL STREQUAL STM32F40
   set(TARGET_LINKER_DIR stm32f40x)
   if (CPU_TYPE_FULL STREQUAL STM32F407xG)
     set(TARGET_FLASH_SIZE 1M)
+    add_definitions(-DSTM32F407xG)
   endif()
 elseif (CPU_TYPE_FULL STREQUAL STM32F413xG)
   set(CPU_TYPE STM32F4)
diff --git a/radio/src/targets/taranis/board.h b/radio/src/targets/taranis/board.h
index 06f51e6f2..124558c9c 100644
--- a/radio/src/targets/taranis/board.h
+++ b/radio/src/targets/taranis/board.h
@@ -41,7 +41,7 @@ void rotaryEncoderInit();
 void rotaryEncoderCheck();
 #endif
 
-#if defined(STM32F413xx)
+#if defined(STM32F413xx) || defined(STM32F407xG)
 #define FLASHSIZE                       0x100000 // 1M
 #else
 #define FLASHSIZE                       0x80000  // 512k