diff --git a/src/backend/executor/nodeResult.c b/src/backend/executor/nodeResult.c
index 94796d5..bddc632 100644
--- a/src/backend/executor/nodeResult.c
+++ b/src/backend/executor/nodeResult.c
@@ -100,7 +100,10 @@ ExecResult(ResultState *node)
 	{
 		resultSlot = ExecProject(node->ps.ps_ProjInfo, &isDone);
 		if (isDone == ExprMultipleResult)
+		{
+			ResetExprContext(econtext);
 			return resultSlot;
+		}
 		/* Done with that source tuple... */
 		node->ps.ps_TupFromTlist = false;
 	}