diff --git a/testing/marionette/driver.js b/testing/marionette/driver.js
index d7ac52e94a3b..904ae2856c9c 100644
--- a/testing/marionette/driver.js
+++ b/testing/marionette/driver.js
@@ -155,7 +155,6 @@ this.GeckoDriver = function(appName, server) {
     // supported features
     "raisesAccessibilityExceptions": false,
     "rotatable": this.appName == "B2G",
-    "acceptSslCerts": false,
     "proxy": {},
 
     // proprietary extensions