diff --git a/include/clang/Frontend/PreprocessorOptions.h b/include/clang/Frontend/PreprocessorOptions.h
index 2394b63..b977030 100644
--- a/include/clang/Frontend/PreprocessorOptions.h
+++ b/include/clang/Frontend/PreprocessorOptions.h
@@ -162,7 +162,7 @@
   
 public:
   PreprocessorOptions() : UsePredefines(true), DetailedRecord(false),
-                          DetailedRecordIncludesNestedMacroExpansions(true),
+                          DetailedRecordIncludesNestedMacroExpansions(false),
                           DisablePCHValidation(false), DisableStatCache(false),
                           DumpDeserializedPCHDecls(false),
                           PrecompiledPreambleBytes(0, true),