--- a/modules/libpref/init/all.js
+++ b/modules/libpref/init/all.js
@@ -429,17 +429,17 @@ pref("media.decoder-doctor.new-issue-end
 
 // Whether to suspend decoding of videos in background tabs.
 pref("media.suspend-bkgnd-video.enabled", true);
 // Delay, in ms, from time window goes to background to suspending
 // video decoders. Defaults to 10 seconds.
 pref("media.suspend-bkgnd-video.delay-ms", 10000);
 // Resume video decoding when the cursor is hovering on a background tab to
 // reduce the resume latency and improve the user experience.
-pref("media.resume-bkgnd-video-on-tabhover", true);;
+pref("media.resume-bkgnd-video-on-tabhover", true);
 
 // Whether to enable media seamless looping.
 pref("media.seamless-looping", true);
 
 #ifdef MOZ_WEBRTC
 pref("media.navigator.enabled", true);
 pref("media.navigator.video.enabled", true);
 pref("media.navigator.video.default_fps",30);
@@ -2389,17 +2389,17 @@ pref("intl.hyphenation-alias.bs-*", "sh"
 // Norwegian has two forms, Bokmål and Nynorsk, with "no" as a macrolanguage encompassing both.
 // For "no", we'll alias to "nb" (Bokmål) as that is the more widely used written form.
 pref("intl.hyphenation-alias.no", "nb");
 pref("intl.hyphenation-alias.no-*", "nb");
 pref("intl.hyphenation-alias.nb-*", "nb");
 pref("intl.hyphenation-alias.nn-*", "nn");
 
 // All prefs of default font should be "auto".
-pref("font.name.serif.ar", "");;
+pref("font.name.serif.ar", "");
 pref("font.name.sans-serif.ar", "");
 pref("font.name.monospace.ar", "");
 pref("font.name.cursive.ar", "");
 
 pref("font.name.serif.el", "");
 pref("font.name.sans-serif.el", "");
 pref("font.name.monospace.el", "");
 pref("font.name.cursive.el", "");