diff --git a/hal/api/Callback.h b/hal/api/Callback.h
index 6b1158d4e0..e1d7378aa0 100644
--- a/hal/api/Callback.h
+++ b/hal/api/Callback.h
@@ -5929,4 +5929,5 @@ Callback<R(A0, A1, A2, A3, A4)> callback(const volatile T *obj, R (*func)(const
 
 } // namespace mbed
 
-#endif
\ No newline at end of file
+#endif
+