1 files changed, 0 insertions, 5 deletions
diff --git a/testing/web-platform/harness/wptrunner/browsers/firefox.py b/testing/web-platform/harness/wptrunner/browsers/firefox.py
index 183820c5cd..c03dd0eda8 100644
--- a/testing/web-platform/harness/wptrunner/browsers/firefox.py
+++ b/testing/web-platform/harness/wptrunner/browsers/firefox.py
@@ -142,11 +142,6 @@ class FirefoxBrowser(Browser):
         if self.e10s:
             self.profile.set_preferences({"browser.tabs.remote.autostart": True})
 
-        # Bug 1262954: winxp + e10s, disable hwaccel
-        if (self.e10s and platform.system() in ("Windows", "Microsoft") and
-            '5.1' in platform.version()):
-            self.profile.set_preferences({"layers.acceleration.disabled": True})
-
         if self.ca_certificate_path is not None:
             self.setup_ssl()