diff --git a/Source/cmGlobalXCodeGenerator.cxx b/Source/cmGlobalXCodeGenerator.cxx
index a019100819..9b967694e3 100644
--- a/Source/cmGlobalXCodeGenerator.cxx
+++ b/Source/cmGlobalXCodeGenerator.cxx
@@ -433,6 +433,7 @@ cmGlobalXCodeGenerator::CreateXCodeSourceFile(cmLocalGenerator* lg,
     lg->AppendFlags(flags, cmtarget.GetProperty("COMPILE_FLAGS"));
     }
   lg->AppendFlags(flags, sf->GetProperty("COMPILE_FLAGS"));
+  cmSystemTools::ReplaceString(flags, "\"", "\\\"");
   cmXCodeObject* fileRef = 
     this->CreateObject(cmXCodeObject::PBXFileReference);