diff --git a/content/base/test/chrome/test_csp_bug768029.html b/content/base/test/chrome/test_csp_bug768029.html
index 59fbc7bad1c7..0eaa19bae725 100644
--- a/content/base/test/chrome/test_csp_bug768029.html
+++ b/content/base/test/chrome/test_csp_bug768029.html
@@ -214,7 +214,9 @@ var gTestRunner = runTest();
 SpecialPowers.addPermission("browser", true, "https://example.com");
 SpecialPowers.pushPrefEnv({'set': [["dom.mozBrowserFramesEnabled", true],
                                    ["security.apps.privileged.CSP.default", DEFAULT_CSP_PRIV],
-                                   ["security.apps.certified.CSP.default", DEFAULT_CSP_CERT]]},
+                                   ["security.apps.certified.CSP.default", DEFAULT_CSP_CERT],
+                                   ["security.mixed_content.block_active_content", false],
+                                   ["security.mixed_content.block_display_content", false]]},
                           function() {  gTestRunner.next(); });