diff --git a/src/backend/commands/trigger.c b/src/backend/commands/trigger.c
index 52177759ab..7af01686b6 100644
--- a/src/backend/commands/trigger.c
+++ b/src/backend/commands/trigger.c
@@ -2978,21 +2978,21 @@ ExecBRUpdateTriggers(EState *estate, EPQState *epqstate,
 		 * received in newslot.  Neither we nor our callers have any further
 		 * interest in the passed-in tuple, so it's okay to overwrite newslot
 		 * with the newer data.
-		 *
-		 * (Typically, newslot was also generated by ExecGetUpdateNewTuple, so
-		 * that epqslot_clean will be that same slot and the copy step below
-		 * is not needed.)
 		 */
 		if (epqslot_candidate != NULL)
-		{
-			TupleTableSlot *epqslot_clean;
-
-			epqslot_clean = ExecGetUpdateNewTuple(relinfo, epqslot_candidate,
-												  oldslot);
+			newslot = ExecGetUpdateNewTuple(relinfo, epqslot_candidate,
+											oldslot);
 
-			if (newslot != epqslot_clean)
-				ExecCopySlot(newslot, epqslot_clean);
-		}
+		/*
+		 * We need to materialize newslot because 1) it might share oldslot's,
+		 * buffer, which might be released on fetching trigtuple from oldslot
+		 * if oldslot is the only owner of buffer,
+		 * and 2) if some trigger returns/stores the old trigtuple,
+		 * and the heap tuple passed to the trigger was located locally,
+		 * newslot might reference that tuple storage, which is freed at the
+		 * end of this function.
+		 */
+		ExecMaterializeSlot(newslot);
 
 		trigtuple = ExecFetchSlotHeapTuple(oldslot, true, &should_free_trig);
 	}
@@ -3049,15 +3049,6 @@ ExecBRUpdateTriggers(EState *estate, EPQState *epqstate,
 		{
 			ExecForceStoreHeapTuple(newtuple, newslot, false);
 
-			/*
-			 * If the tuple returned by the trigger / being stored, is the old
-			 * row version, and the heap tuple passed to the trigger was
-			 * allocated locally, materialize the slot. Otherwise we might
-			 * free it while still referenced by the slot.
-			 */
-			if (should_free_trig && newtuple == trigtuple)
-				ExecMaterializeSlot(newslot);
-
 			if (should_free_new)
 				heap_freetuple(oldtuple);