diff --git a/src/backend/executor/nodeModifyTable.c b/src/backend/executor/nodeModifyTable.c
index ee6eef74f7a..d6429ded120 100644
--- a/src/backend/executor/nodeModifyTable.c
+++ b/src/backend/executor/nodeModifyTable.c
@@ -394,6 +394,12 @@ ldelete:;
 		rslot = ExecProcessReturning(resultRelInfo->ri_projectReturning,
 									 slot, planSlot);
 
+		/*
+		 * Before releasing the target tuple again, make sure rslot has a
+		 * local copy of any pass-by-reference values.
+		 */
+		ExecMaterializeSlot(rslot);
+
 		ExecClearTuple(slot);
 		ReleaseBuffer(delbuffer);