diff --git a/src/test/java/io/bonsai/plugins/synonyms/RestTests.java b/src/test/java/io/bonsai/plugins/synonyms/RestTests.java
index 90bb903..03f1f8d 100644
--- a/src/test/java/io/bonsai/plugins/synonyms/RestTests.java
+++ b/src/test/java/io/bonsai/plugins/synonyms/RestTests.java
@@ -62,8 +62,7 @@ public void testInvalidSynonyms() throws IOException {
             .body(getResourceStr("files/invalid_synonyms.json"))
             .execute()) {
       Assert.assertEquals(422, curlResponse.getHttpStatusCode());
-      Assert.assertTrue(
-          curlResponse.getContentAsString().contains("Invalid synonym rule at line 1"));
+      Assert.assertTrue(curlResponse.getContentAsString().contains("No rules accepted"));
     }
   }
 }
diff --git a/src/test/resources/files/invalid_synonyms.json b/src/test/resources/files/invalid_synonyms.json
index f3b9490..bc476c7 100644
--- a/src/test/resources/files/invalid_synonyms.json
+++ b/src/test/resources/files/invalid_synonyms.json
@@ -1,6 +1,6 @@
 {
   "name": "test",
   "rules": [
-    "fancy,],pants,["
+    ",=>,....,,,,,,"
   ]
 }