diff --git a/quantum/config_common.h b/quantum/config_common.h
index 21960f1a..4d3939da 100644
--- a/quantum/config_common.h
+++ b/quantum/config_common.h
@@ -78,3 +78,5 @@
 #       error "USART configuration is needed."
 #   endif
 #endif
+
+#endif
\ No newline at end of file