diff --git a/core/vm/instructions_test.go b/core/vm/instructions_test.go
index 72f561f4bf..3ceb551589 100644
--- a/core/vm/instructions_test.go
+++ b/core/vm/instructions_test.go
@@ -259,7 +259,7 @@ func TestWriteExpectedValues(t *testing.T) {
 		if err != nil {
 			t.Fatal(err)
 		}
-		_ = os.WriteFile(fmt.Sprintf("testdata/testcases_%v.json", name), data, 0644)
+		err = os.WriteFile(fmt.Sprintf("testdata/testcases_%v.json", name), data, 0644)
 		if err != nil {
 			t.Fatal(err)
 		}