diff --git a/it/integration_test.go b/it/integration_test.go
index 8671181..da2b4ac 100644
--- a/it/integration_test.go
+++ b/it/integration_test.go
@@ -89,11 +89,11 @@ func TestMigrator__integration(t *testing.T) {
 	for i := range data {
 		m := make(map[string]interface{})
 
-		switch d := data[i].value.(type) {
+		switch data[i].value.(type) {
 		case int:
-			m[data[i].key] = int(d)
+			m[data[i].key] = data[i].value.(int)
 		case string:
-			m[data[i].key] = string(d)
+			m[data[i].key] = data[i].value.(string)
 		default:
 			t.Fatal("Error: unsupported data type")
 		}