diff --git a/cli/tests/data/marathon/apps/app_add_400.json b/cli/tests/data/marathon/apps/app_add_400.json
index 347d049..4883e09 100644
--- a/cli/tests/data/marathon/apps/app_add_400.json
+++ b/cli/tests/data/marathon/apps/app_add_400.json
@@ -7,7 +7,7 @@
         "type": "DOCKER",
         "docker": {
             "image": "busybox",
-            "network": "host"
+            "network": "bogus"
         }
     }
 }
diff --git a/cli/tests/data/marathon/groups/complicated.json b/cli/tests/data/marathon/groups/complicated.json
index ba8c404..d76c188 100644
--- a/cli/tests/data/marathon/groups/complicated.json
+++ b/cli/tests/data/marathon/groups/complicated.json
@@ -34,5 +34,5 @@
             "id": "moregroups"
         }
     ],
-    "id": "test-group"
+    "id": "/test-group"
 }
diff --git a/cli/tests/data/marathon/groups/complicated_bad.json b/cli/tests/data/marathon/groups/complicated_bad.json
index b0fc719..469365e 100644
--- a/cli/tests/data/marathon/groups/complicated_bad.json
+++ b/cli/tests/data/marathon/groups/complicated_bad.json
@@ -26,5 +26,5 @@
             "id": "moregroups"
         }
     ],
-    "id": "test-group"
+    "id": "/test-group"
 }
diff --git a/cli/tests/data/marathon/groups/good.json b/cli/tests/data/marathon/groups/good.json
index dc0bb62..c2f0d4e 100644
--- a/cli/tests/data/marathon/groups/good.json
+++ b/cli/tests/data/marathon/groups/good.json
@@ -11,5 +11,5 @@
             "id": "sleep"
         }
     ],
-    "id": "test-group"
+    "id": "/test-group"
 }
diff --git a/cli/tests/data/marathon/groups/scale.json b/cli/tests/data/marathon/groups/scale.json
index e78f655..bd8a487 100644
--- a/cli/tests/data/marathon/groups/scale.json
+++ b/cli/tests/data/marathon/groups/scale.json
@@ -11,5 +11,5 @@
       "id": "sleep"
     }
   ],
-  "id": "scale-group"
+  "id": "/scale-group"
 }
diff --git a/cli/tests/integrations/test_marathon.py b/cli/tests/integrations/test_marathon.py
index c4b4d72..d6caab5 100644
--- a/cli/tests/integrations/test_marathon.py
+++ b/cli/tests/integrations/test_marathon.py
@@ -246,18 +246,8 @@ def test_update_bad_type():
             ['dcos', 'marathon', 'app', 'update',
              'zero-instance-app', 'cpus="a string"'])
 
-        stderr_end = b"""{
-  "details": [
-    {
-      "errors": [
-        "error.expected.jsnumber"
-      ],
-      "path": "/cpus"
-    }
-  ],
-  "message": "Invalid JSON"
-}
-"""
+        stderr_end = b"""{"message":"Invalid JSON","details":[{"path":"/cpus","errors":["error.expected.jsnumber"]}]}"""  # noqa: E501
+
         assert returncode == 1
         assert stderr_end in stderr
         assert stdout == b''
@@ -282,24 +272,11 @@ def test_app_add_invalid_request():
     returncode, stdout, stderr = exec_command(
         ['dcos', 'marathon', 'app', 'add', path])
 
-    assert returncode == 1
-    assert stdout == b''
-    assert re.match(b"Error on request \[POST .*\]: HTTP 400: Bad Request:",
-                    stderr)
+    stderr_end = b"""{"message":"Invalid JSON","details":[{"path":"/container/docker/network","errors":["error.unknown.enum.literal"]}]}"""  # noqa: E501
 
-    stderr_end = b"""{
-  "details": [
-    {
-      "errors": [
-        "host is not a valid network type"
-      ],
-      "path": "/container/docker/network"
-    }
-  ],
-  "message": "Invalid JSON"
-}
-"""
-    assert stderr.endswith(stderr_end)
+    assert returncode == 1
+    assert stderr_end in stderr
+    assert stdout == b''
 
 
 def test_update_app():
diff --git a/cli/tests/integrations/test_marathon_groups.py b/cli/tests/integrations/test_marathon_groups.py
index bd4e8c5..fabf7b2 100644
--- a/cli/tests/integrations/test_marathon_groups.py
+++ b/cli/tests/integrations/test_marathon_groups.py
@@ -41,21 +41,11 @@ def test_add_bad_complicated_group():
             ['dcos', 'marathon', 'group', 'add'],
             stdin=fd)
 
-        err = b"""{
-  "details": [
-    {
-      "errors": [
-        "error.path.missing"
-      ],
-      "path": "/groups(0)/apps(0)/id"
-    }
-  ],
-  "message": "Invalid JSON"
-}
-"""
+        stderr_end = b"""{"message":"Invalid JSON","details":[{"path":"/groups(0)/apps(0)/id","errors":["\'id\' is undefined on object: {}"]}]}"""  # noqa: E501
+
         assert returncode == 1
+        assert stderr_end in stderr
         assert stdout == b''
-        assert err in stderr
 
 
 def test_update_group_from_stdin():