diff --git a/aws-logs-metricfilter/overrides.json b/aws-logs-metricfilter/overrides.json
deleted file mode 100644
index 3ff6679..0000000
--- a/aws-logs-metricfilter/overrides.json
+++ /dev/null
@@ -1,14 +0,0 @@
-{
-  "CREATE": {
-    "/LogGroupName": "this-is-a-random-loggroup-for-contract-tests",
-    "/FilterName": "my-metric-filter",
-    "/FilterPattern": "[size]",
-    "/MetricTransformations": [
-      {
-        "MetricValue": "10",
-        "MetricNamespace": "my-namespace",
-        "MetricName": "metric-name"
-      }
-    ]
-  }
-}
diff --git a/aws-logs-metricfilter/src/test/java/software/amazon/logs/metricfilter/BaseHandlerStdTest.java b/aws-logs-metricfilter/src/test/java/software/amazon/logs/metricfilter/BaseHandlerStdTest.java
index 6794f59..aed605e 100644
--- a/aws-logs-metricfilter/src/test/java/software/amazon/logs/metricfilter/BaseHandlerStdTest.java
+++ b/aws-logs-metricfilter/src/test/java/software/amazon/logs/metricfilter/BaseHandlerStdTest.java
@@ -114,7 +114,7 @@ void handleNonRetryableError() {
         assertThat(response).isNotNull();
         assertThat(response.getStatus()).isEqualTo(OperationStatus.FAILED);
         assertThat(response.getCallbackDelaySeconds()).isZero();
-        assertTrue(response.getMessage().contains("Invalid request (Service: CloudWatchLogs, Status Code: 400, Request ID: e689f8f9-bc25-48de-86be-4cee73125707"));
+        assertThat(response.getMessage()).contains("Invalid request (Service: CloudWatchLogs, Status Code: 400, Request ID: e689f8f9-bc25-48de-86be-4cee73125707");
         assertThat(response.getErrorCode()).isNotNull();
         verify(proxyClient.client(), never()).putMetricFilter(any(PutMetricFilterRequest.class));
     }
@@ -151,4 +151,4 @@ private static Stream<Arguments> exists() {
                 Arguments.of("filter-name", "", false)
         );
     }
-}
\ No newline at end of file
+}