diff --git a/testing/mochitest/android.json b/testing/mochitest/android.json
index 4bbb71193fd3..db8777394ab9 100644
--- a/testing/mochitest/android.json
+++ b/testing/mochitest/android.json
@@ -10,9 +10,9 @@
  "content/base/test/test_bug503481b.html": "TIMED_OUT",
  "content/base/test/test_bug505783.html": "TIMED_OUT",
  "content/base/test/test_bug590812.html": "bug 687032",
- "content/base/test/test_copypaste.html": "",
- "content/base/test/test_copypaste.xhtml": "",
- "content/base/test/test_copypaste.xul": "",
+ "content/base/test/test_copypaste.html": "bug 904183",
+ "content/base/test/test_copypaste.xhtml": "bug 904183",
+ "content/base/test/test_copypaste.xul": "bug 904183",
  "content/base/test/test_CrossSiteXHR.html": "",
  "content/base/test/test_CrossSiteXHR_cache.html": "",
  "content/base/test/test_CrossSiteXHR_origin.html": "",
diff --git a/testing/mochitest/androidx86.json b/testing/mochitest/androidx86.json
index b4b696511aad..6e0a47f0a742 100644
--- a/testing/mochitest/androidx86.json
+++ b/testing/mochitest/androidx86.json
@@ -11,9 +11,9 @@
  "content/base/test/test_bug503481b.html": "TIMED_OUT",
  "content/base/test/test_bug505783.html": "TIMED_OUT",
  "content/base/test/test_bug590812.html": "bug 687032",
- "content/base/test/test_copypaste.html": "",
- "content/base/test/test_copypaste.xhtml": "",
- "content/base/test/test_copypaste.xul": "",
+ "content/base/test/test_copypaste.html": "bug 904183",
+ "content/base/test/test_copypaste.xhtml": "bug 904183",
+ "content/base/test/test_copypaste.xul": "bug 904183",
  "content/base/test/test_CrossSiteXHR.html": "",
  "content/base/test/test_CrossSiteXHR_cache.html": "",
  "content/base/test/test_CrossSiteXHR_origin.html": "",
diff --git a/testing/mochitest/b2g.json b/testing/mochitest/b2g.json
index 0b6e6f6d63ed..06ae206200ce 100644
--- a/testing/mochitest/b2g.json
+++ b/testing/mochitest/b2g.json
@@ -160,9 +160,9 @@
     "content/base/test/test_bug650386_redirect_307.html":"",
     "content/base/test/test_bug717511.html":"",
     "content/base/test/test_child_process_shutdown_message.html":"",
-    "content/base/test/test_copypaste.html":"",
-    "content/base/test/test_copypaste.xhtml":"",
-    "content/base/test/test_copypaste.xul":"",
+    "content/base/test/test_copypaste.html":"bug 904183",
+    "content/base/test/test_copypaste.xhtml":"bug 904183",
+    "content/base/test/test_copypaste.xul":"bug 904183",
     "content/base/test/test_csp_redirects.html":"",
     "content/base/test/test_fileapi_slice.html":"",
     "content/base/test/test_messagemanager_assertpermission.html":"",