diff --git a/clang-tools-extra/clangd/xpc/XPCTransport.cpp b/clang-tools-extra/clangd/xpc/XPCTransport.cpp
--- a/clang-tools-extra/clangd/xpc/XPCTransport.cpp
+++ b/clang-tools-extra/clangd/xpc/XPCTransport.cpp
@@ -47,7 +47,7 @@
 // C "closure" for XPCTransport::loop() method
 namespace xpcClosure {
 void connection_handler(xpc_connection_t clientConnection);
-}
+} // namespace xpcClosure
 
 class XPCTransport : public Transport {
 public: