diff --git a/common/content/buffer.js b/common/content/buffer.js
index 9ddf9ba4..caa4000a 100644
--- a/common/content/buffer.js
+++ b/common/content/buffer.js
@@ -1457,7 +1457,7 @@ function Marks() //{{{
         return name + ", " + mark.location +
                 ", (" + Math.round(mark.position.x * 100) +
                 "%, " + Math.round(mark.position.y * 100) + "%)" +
-                (('tab' in mark) ? ", tab: " + tabs.index(mark.tab) : "");
+                (("tab" in mark) ? ", tab: " + tabs.index(mark.tab) : "");
     }
 
     function removeLocalMark(mark)
diff --git a/common/content/commands.js b/common/content/commands.js
index 6e74f680..15726961 100644
--- a/common/content/commands.js
+++ b/common/content/commands.js
@@ -924,7 +924,7 @@ function Commands() //{{{
                 [["-count"], commandManager.OPTION_NOARG],
                 [["-complete"], commandManager.OPTION_STRING,
                      function (arg) arg in completeOptionMap || /custom,\w+/.test(arg),
-                     function (context) [[k, ''] for ([k, v] in Iterator(completeOptionMap))]]
+                     function (context) [[k, ""] for ([k, v] in Iterator(completeOptionMap))]]
             ],
             literal: 1,
             serial: function () [