diff --git a/vlib/v/ast/table.v b/vlib/v/ast/table.v
index 604c852b97..863c402d24 100644
--- a/vlib/v/ast/table.v
+++ b/vlib/v/ast/table.v
@@ -1307,16 +1307,16 @@ pub fn (t &Table) sumtype_has_variant(parent Type, variant Type, is_as bool) boo
 }
 
 fn (t &Table) sumtype_check_function_variant(parent_info SumType, variant Type, is_as bool) bool {
+	variant_fn := (t.sym(variant).info as FnType).func
+	variant_fn_sig := t.fn_type_source_signature(variant_fn)
+
 	for v in parent_info.variants {
 		v_sym := t.sym(v)
-		if v_sym.kind != .function {
-			continue
-		}
-		v_fn := (v_sym.info as FnType).func
-		variant_fn := (t.sym(variant).info as FnType).func
-		if t.fn_type_source_signature(v_fn) == t.fn_type_source_signature(variant_fn)
-			&& (!is_as || v.nr_muls() == variant.nr_muls()) {
-			return true
+		if v_sym.info is FnType {
+			if t.fn_type_source_signature(v_sym.info.func) == variant_fn_sig
+				&& (!is_as || v.nr_muls() == variant.nr_muls()) {
+				return true
+			}
 		}
 	}
 	return false