diff --git a/src/include/executor/tuptable.h b/src/include/executor/tuptable.h
index bb38aa655c..02171ce94c 100644
--- a/src/include/executor/tuptable.h
+++ b/src/include/executor/tuptable.h
@@ -180,6 +180,8 @@ extern bool slot_getsysattr(TupleTableSlot *slot, int attnum,
 				Datum *value, bool *isnull);
 extern void slot_getmissingattrs(TupleTableSlot *slot, int startAttNum, int lastAttNum);
 
+#ifndef FRONTEND
+
 /*
  * slot_getallattrs
  *		This function forces all the entries of the slot's Datum/isnull
@@ -192,4 +194,6 @@ slot_getallattrs(TupleTableSlot *slot)
 	slot_getsomeattrs(slot, slot->tts_tupleDescriptor->natts);
 }
 
+#endif
+
 #endif							/* TUPTABLE_H */