diff --git a/src/check_expr.cpp b/src/check_expr.cpp
index f0c33d9d8..08f488642 100644
--- a/src/check_expr.cpp
+++ b/src/check_expr.cpp
@@ -10788,6 +10788,7 @@ gb_internal ExprKind check_expr_base_internal(CheckerContext *c, Operand *o, Ast
 		return Expr_Expr;
 	case_end;
 
+	case Ast_DistinctType:
 	case Ast_TypeidType:
 	case Ast_PolyType:
 	case Ast_ProcType: