diff --git a/targets/TARGET_STM/TARGET_STM32F4/pwmout_device.h b/targets/TARGET_STM/TARGET_STM32F4/pwmout_device.h
index 070149e480..1d8e0cf0ee 100644
--- a/targets/TARGET_STM/TARGET_STM32F4/pwmout_device.h
+++ b/targets/TARGET_STM/TARGET_STM32F4/pwmout_device.h
@@ -54,4 +54,8 @@ extern const pwm_apb_map_t pwm_apb_map_table[];
 
 #endif // DEVICE_PWMOUT
 
+#ifdef __cplusplus
+}
+#endif
+    
 #endif