diff --git a/third_party/libpg_query/grammar/statements/select.y b/third_party/libpg_query/grammar/statements/select.y
index a73a2c5d8692..e4f38ce7050e 100644
--- a/third_party/libpg_query/grammar/statements/select.y
+++ b/third_party/libpg_query/grammar/statements/select.y
@@ -3322,7 +3322,7 @@ pgq_a_expr:
 
 
 dict_arg:
-	ColIdOrString ':' a_expr						{
+	ColIdOrString ':' pgq_a_expr						{
 		PGNamedArgExpr *na = makeNode(PGNamedArgExpr);
 		na->name = $1;
 		na->arg = (PGExpr *) $3;