diff --git a/Makefile b/Makefile
index 174610b6..f48aa7c6 100644
--- a/Makefile
+++ b/Makefile
@@ -71,6 +71,7 @@ SOURCES += lib/STM32F4xx_StdPeriph_Driver-V1.6.0/src/misc.c
 SOURCES += lib/CMSIS/Device/ST/STM32F4xx/Source/startup_stm32f40_41xxx.s
 
 CPPFLAGS += -DSTM32F40_41xxx
+CPPFLAGS += -DHSE_VALUE=8000000
 LDSCRIPT = stm32_flash.ld
 
 #============================================================================
diff --git a/bootloader/Makefile b/bootloader/Makefile
index 32b85a94..7dc7bfe5 100644
--- a/bootloader/Makefile
+++ b/bootloader/Makefile
@@ -42,6 +42,7 @@ SOURCES += lib/STM32F4xx_StdPeriph_Driver-V1.6.0/src/misc.c
 SOURCES += lib/CMSIS/Device/ST/STM32F4xx/Source/startup_stm32f40_41xxx.s
 
 CPPFLAGS += -DSTM32F40_41xxx
+CPPFLAGS += -DHSE_VALUE=8000000
 LDSCRIPT = bootloader/stm32_flash.ld
 
 #============================================================================
diff --git a/inc/stm32f4xx_conf.h b/inc/stm32f4xx_conf.h
index 74447a8f..b81ad186 100644
--- a/inc/stm32f4xx_conf.h
+++ b/inc/stm32f4xx_conf.h
@@ -23,12 +23,6 @@
 #ifndef __STM32F4xx_CONF_H
 #define __STM32F4xx_CONF_H
 
-#if defined  (HSE_VALUE)
-/* Redefine the HSE value; it's equal to 8 MHz on the STM32F4-DISCOVERY Kit */
- #undef HSE_VALUE
- #define HSE_VALUE    ((uint32_t)8000000) 
-#endif /* HSE_VALUE */
-
 /* Includes ------------------------------------------------------------------*/
 /* Uncomment the line below to enable peripheral header file inclusion */
 #include "stm32f4xx_adc.h"