diff --git a/style/cpp/.clang-format b/style/cpp/.clang-format
index d92a3f1..4922cf6 100644
--- a/style/cpp/.clang-format
+++ b/style/cpp/.clang-format
@@ -78,6 +78,7 @@
   - Regex:           '.*'
     Priority:        6
 IndentCaseLabels: true
+IndentExternBlock: NoIndent
 IndentRequiresClause: true
 IndentWidth:     4
 IndentWrappedFunctionNames: true