1 files changed, 1 insertions, 1 deletions
diff --git a/clang/lib/Frontend/Rewrite/RewriteModernObjC.cpp b/clang/lib/Frontend/Rewrite/RewriteModernObjC.cpp
index 626ec4d71ccd..b4487f004715 100644
--- a/clang/lib/Frontend/Rewrite/RewriteModernObjC.cpp
+++ b/clang/lib/Frontend/Rewrite/RewriteModernObjC.cpp
@@ -633,7 +633,7 @@ static bool IsHeaderFile(const std::string &Filename) {
     return false;
   }
 
-  std::string Ext = std::string(Filename.begin()+DotPos+1, Filename.end());
+  std::string Ext = Filename.substr(DotPos + 1);
   // C header: .h
   // C++ header: .hh or .H;
   return Ext == "h" || Ext == "hh" || Ext == "H";