diff --git a/testing/marionette/client/marionette_driver/geckoinstance.py b/testing/marionette/client/marionette_driver/geckoinstance.py
index e78e9f55c717..523ab9db4833 100644
--- a/testing/marionette/client/marionette_driver/geckoinstance.py
+++ b/testing/marionette/client/marionette_driver/geckoinstance.py
@@ -60,6 +60,8 @@ class GeckoInstance(object):
         # Do not show datareporting policy notifications which can interfere with tests
         "datareporting.policy.dataSubmissionEnabled": False,
         "datareporting.policy.dataSubmissionPolicyBypassNotification": True,
+        # Disable popup-blocker
+        "dom.disable_open_during_load": False,
         # Enabling the support for File object creation in the content process.
         "dom.file.createInChild": True,
         # Disable delayed user input event handling