diff --git a/dom/media/tests/mochitest/test_peerConnection_basicScreenshare.html b/dom/media/tests/mochitest/test_peerConnection_basicScreenshare.html
index b0d8b295119a..afc2cd76a7a7 100644
--- a/dom/media/tests/mochitest/test_peerConnection_basicScreenshare.html
+++ b/dom/media/tests/mochitest/test_peerConnection_basicScreenshare.html
@@ -27,7 +27,7 @@
       },
       fake: false
     };
-    test.setMediaConstraints([constraints], [constraints]);
+    test.setMediaConstraints([constraints], []);
     test.run();
   });
 </script>
diff --git a/dom/media/tests/mochitest/test_peerConnection_basicWindowshare.html b/dom/media/tests/mochitest/test_peerConnection_basicWindowshare.html
index b6a729dd3326..0ca94ec57eb8 100644
--- a/dom/media/tests/mochitest/test_peerConnection_basicWindowshare.html
+++ b/dom/media/tests/mochitest/test_peerConnection_basicWindowshare.html
@@ -27,7 +27,7 @@
       },
       fake: false
     };
-    test.setMediaConstraints([constraints], [constraints]);
+    test.setMediaConstraints([constraints], []);
     test.run();
   });
 </script>