diff --git a/vlib/v/fmt/tests/simple_expected.vv b/vlib/v/fmt/tests/simple_expected.vv
index 7a7b80562b..95f2d6a5cd 100644
--- a/vlib/v/fmt/tests/simple_expected.vv
+++ b/vlib/v/fmt/tests/simple_expected.vv
@@ -182,3 +182,7 @@ fn fn_with_match_expr() {
 		else {}
 	}
 }
+
+fn fn_variadic(arg int, args ...string) {
+	println('Do nothing')
+}
diff --git a/vlib/v/fmt/tests/simple_input.vv b/vlib/v/fmt/tests/simple_input.vv
index b2df23644e..a2c1308f6a 100644
--- a/vlib/v/fmt/tests/simple_input.vv
+++ b/vlib/v/fmt/tests/simple_input.vv
@@ -182,3 +182,7 @@ fn fn_with_match_expr() {
 		else {}
 	}
 }
+
+fn fn_variadic(arg int, args... string) {
+	println('Do nothing')
+}