diff --git a/flang/include/flang/Frontend/TextDiagnosticPrinter.h b/flang/include/flang/Frontend/TextDiagnosticPrinter.h
index b67731d843522..754ebf323d4cb 100644
--- a/flang/include/flang/Frontend/TextDiagnosticPrinter.h
+++ b/flang/include/flang/Frontend/TextDiagnosticPrinter.h
@@ -23,7 +23,7 @@
 namespace clang {
 class DiagnosticOptions;
 class DiagnosticsEngine;
-}; // namespace clang
+} // namespace clang
 
 using llvm::IntrusiveRefCntPtr;
 using llvm::raw_ostream;