diff --git a/vlib/v/tests/structs/struct_field_shared_test.v b/vlib/v/tests/structs/struct_field_shared_test.v
index 84e1d02b657b01..5524fe9ff5d6ff 100644
--- a/vlib/v/tests/structs/struct_field_shared_test.v
+++ b/vlib/v/tests/structs/struct_field_shared_test.v
@@ -1,5 +1,6 @@
 struct Foo {
 	bar shared struct {
+	mut:
 		foo int
 		bar int
 	}