diff --git a/common/content/commandline.js b/common/content/commandline.js
index 623f5d1e..4afb62c6 100644
--- a/common/content/commandline.js
+++ b/common/content/commandline.js
@@ -261,7 +261,7 @@ var CommandWidgets = Class("CommandWidgets", {
         [this.commandbar.container, this.statusbar.container].forEach(check);
 
         // Work around a redrawing bug.
-        if (changed && config.haveGecko("16")) {
+        if (changed && config.haveGecko("16", "20")) {
             util.delay(function () {
                 // Urgh.
                 statusline.statusBar.style.paddingRight = "1px";