diff --git a/.clang-format b/.clang-format
index 7be7de5a2b..323a1c1afb 100644
--- a/.clang-format
+++ b/.clang-format
@@ -11,4 +11,7 @@ BasedOnStyle:  Google
 Language:      CSharp
 BasedOnStyle:  Microsoft
 NamespaceIndentation: None
+---
+Language:       Proto
+BasedOnStyle:  Google
 ...