diff --git a/src/include/utils/inval.h b/src/include/utils/inval.h
index feb55f1d08..6fd6e1e07a 100644
--- a/src/include/utils/inval.h
+++ b/src/include/utils/inval.h
@@ -64,7 +64,4 @@ extern void CacheRegisterRelcacheCallback(RelcacheCallbackFunction func,
 
 extern void CallSyscacheCallbacks(int cacheid, uint32 hashvalue);
 
-extern void inval_twophase_postcommit(TransactionId xid, uint16 info,
-						  void *recdata, uint32 len);
-
 #endif   /* INVAL_H */