diff --git a/src/backend/parser/analyze.c b/src/backend/parser/analyze.c
index 15cc6240203..3f669a6eb26 100644
--- a/src/backend/parser/analyze.c
+++ b/src/backend/parser/analyze.c
@@ -2289,7 +2289,7 @@ constructSetOpTargetlist(ParseState *pstate, SetOperationStmt *op,
 				 errmsg("each %s query must have the same number of columns",
 						context),
 				 parser_errposition(pstate,
-									exprLocation((Node *) rtargetlist))));
+									exprLocation((const Node *) rtargetlist))));
 
 	if (targetlist)
 		*targetlist = NIL;