diff --git a/src/backend/parser/parse_relation.c b/src/backend/parser/parse_relation.c
index 225137a6574..bbbb0b618ab 100644
--- a/src/backend/parser/parse_relation.c
+++ b/src/backend/parser/parse_relation.c
@@ -2220,7 +2220,6 @@ expandRTE(RangeTblEntry *rte, int rtindex, int sublevels_up,
 						char	   *label = strVal(lfirst(aliasp_item));
 
 						*colnames = lappend(*colnames, makeString(pstrdup(label)));
-						aliasp_item = lnext(aliasp_item);
 					}
 
 					if (colvars)
@@ -2236,6 +2235,8 @@ expandRTE(RangeTblEntry *rte, int rtindex, int sublevels_up,
 
 						*colvars = lappend(*colvars, varnode);
 					}
+
+					aliasp_item = lnext(aliasp_item);
 				}
 			}
 			break;