diff --git a/boards/base/Embest-STM32-DMSTF4BB/chibios_board/board.h b/boards/base/Embest-STM32-DMSTF4BB/chibios_board/board.h
index f68d0609..599281ba 100644
--- a/boards/base/Embest-STM32-DMSTF4BB/chibios_board/board.h
+++ b/boards/base/Embest-STM32-DMSTF4BB/chibios_board/board.h
@@ -50,7 +50,7 @@
 /*
  * MCU type as defined in the ST header file stm32f4xx.h.
  */
-#define STM32F4XX
+#define STM32F40_41xxx
 
 /*
  * IO pins assignments.