diff --git a/clang/lib/AST/TypeLoc.cpp b/clang/lib/AST/TypeLoc.cpp
index 7e6b110bf5ed..50a512028e96 100644
--- a/clang/lib/AST/TypeLoc.cpp
+++ b/clang/lib/AST/TypeLoc.cpp
@@ -92,5 +92,5 @@ namespace {
 void TypeLoc::initializeImpl(TypeLoc TL, SourceLocation Loc) {
   do {
     TypeLocInitializer(Loc).Visit(TL);
-  } while (TL = TL.getNextTypeLoc());
+  } while ((TL = TL.getNextTypeLoc()));
 }