diff --git a/spring/src/test/java/io/kubernetes/client/spring/extended/controller/KubernetesInformerCreatorTest.java b/spring/src/test/java/io/kubernetes/client/spring/extended/controller/KubernetesInformerCreatorTest.java
index ed40b05491..88a12b4834 100644
--- a/spring/src/test/java/io/kubernetes/client/spring/extended/controller/KubernetesInformerCreatorTest.java
+++ b/spring/src/test/java/io/kubernetes/client/spring/extended/controller/KubernetesInformerCreatorTest.java
@@ -125,9 +125,11 @@ void informerInjection() throws InterruptedException {
         get(urlPathEqualTo("/api/v1/pods"))
             .withPostServeAction("semaphore", getParams)
             .withQueryParam("watch", equalTo("false"))
+            .atPriority(1)
             .willReturn(
                 aResponse()
                     .withStatus(200)
+                    .withHeader("Content-Type", "application/json")
                     .withBody(
                         JSON.serialize(
                                 new V1PodList()
@@ -137,15 +139,22 @@ void informerInjection() throws InterruptedException {
         get(urlPathEqualTo("/api/v1/pods"))
             .withPostServeAction("semaphore", watchParams)
             .withQueryParam("watch", equalTo("true"))
-            .willReturn(aResponse().withStatus(200).withBody("{}")));
+            .atPriority(2)
+            .willReturn(
+                aResponse()
+                    .withStatus(200)
+                    .withHeader("Content-Type", "application/json")
+                    .withBody("{}")));
 
     apiServer.stubFor(
         get(urlPathEqualTo("/api/v1/namespaces/default/configmaps"))
             .withPostServeAction("semaphore", getParams)
             .withQueryParam("watch", equalTo("false"))
+            .atPriority(1)
             .willReturn(
                 aResponse()
                     .withStatus(200)
+                    .withHeader("Content-Type", "application/json")
                     .withBody(
                         JSON.serialize(
                                 new V1ConfigMapList()
@@ -155,7 +164,12 @@ void informerInjection() throws InterruptedException {
         get(urlPathEqualTo("/api/v1/namespaces/default/configmaps"))
             .withPostServeAction("semaphore", watchParams)
             .withQueryParam("watch", equalTo("true"))
-            .willReturn(aResponse().withStatus(200).withBody("{}")));
+            .atPriority(2)
+            .willReturn(
+                aResponse()
+                    .withStatus(200)
+                    .withHeader("Content-Type", "application/json")
+                    .withBody("{}")));
 
     // These will be released for each web call above.
     getCount.acquire(2);