diff --git a/lib/Basic/IdentifierTable.cpp b/lib/Basic/IdentifierTable.cpp
index 8993e67..1f0c52b 100644
--- a/lib/Basic/IdentifierTable.cpp
+++ b/lib/Basic/IdentifierTable.cpp
@@ -34,6 +34,7 @@
   IsPoisoned = false;
   IsCPPOperatorKeyword = false;
   NeedsHandleIdentifier = false;
+  IsFromPCH = false;
   FETokenInfo = 0;
   Entry = 0;
 }