diff --git a/src/compiler/objc_file.cc b/src/compiler/objc_file.cc
index 9a622e6..b4f92d0 100644
--- a/src/compiler/objc_file.cc
+++ b/src/compiler/objc_file.cc
@@ -70,19 +70,8 @@ namespace google { namespace protobuf { namespace compiler {namespace objectivec
                            "value", *i);
         }
         
-        printer->Print(
-                       "#ifndef __has_feature\n"
-                       "  #define __has_feature(x) 0 // Compatibility with non-clang compilers.\n"
-                       "#endif // __has_feature\n\n");
-        
-        printer->Print(
-                       "#ifndef NS_RETURNS_NOT_RETAINED\n"
-                       "  #if __has_feature(attribute_ns_returns_not_retained)\n"
-                       "    #define NS_RETURNS_NOT_RETAINED __attribute__((ns_returns_not_retained))\n"
-                       "  #else\n"
-                       "    #define NS_RETURNS_NOT_RETAINED\n"
-                       "  #endif\n"
-                       "#endif\n\n");
+    
+        printer->Print("\n\n");
         
         // need to write out all enums first
         for (int i = 0; i < file_->enum_type_count(); i++) {