diff --git a/os/hal/ports/STM32/STM32F4xx/ext_lld_isr.c b/os/hal/ports/STM32/STM32F4xx/ext_lld_isr.c
index 2371beb7a..94bb0c57c 100644
--- a/os/hal/ports/STM32/STM32F4xx/ext_lld_isr.c
+++ b/os/hal/ports/STM32/STM32F4xx/ext_lld_isr.c
@@ -268,7 +268,7 @@ OSAL_IRQ_HANDLER(Vector48) {
 
   OSAL_IRQ_EPILOGUE();
 }
-#endif /* defined(STM32F401xx) */
+#endif /* !defined(STM32F401xx) */
 
 /**
  * @brief   EXTI[22] interrupt handler (RTC_WKUP).