diff --git a/test/Opis/Filter/DbalRecordExistsFilterTest.php b/test/Opis/Filter/DbalRecordExistsFilterTest.php
index 9f8c4a8..061b92d 100644
--- a/test/Opis/Filter/DbalRecordExistsFilterTest.php
+++ b/test/Opis/Filter/DbalRecordExistsFilterTest.php
@@ -64,7 +64,7 @@ public function testInValidator(): void
 {"key": "exists"}
 JSON;
         $data = json_decode($data);
-        $result = $validator->validate($data, 'test:test/test-db-filter.json');
+        $result = $validator->validate($data, 'test:test/test-dbal-filter.json');
 
         $this->assertTrue($result->isValid());
     }
diff --git a/test/test-dbal-filter.json b/test/test-dbal-filter.json
new file mode 100644
index 0000000..6ebb5a4
--- /dev/null
+++ b/test/test-dbal-filter.json
@@ -0,0 +1,23 @@
+{
+  "type": "object",
+  "properties": {
+    "key": {
+      "type": "string",
+      "minLength": 1,
+      "maxLength": 64,
+      "$filters": [
+        {
+          "$func": "dbal-exists",
+          "$vars": {
+            "db": "dbal",
+            "table": "foo",
+            "field": "key",
+            "exists": true
+          }
+        }
+      ]
+    }
+  },
+  "required": ["key"],
+  "additionalProperties": false
+}
\ No newline at end of file