diff --git a/content/commands.js b/content/commands.js
index 2e869167..3ad24409 100644
--- a/content/commands.js
+++ b/content/commands.js
@@ -1824,11 +1824,11 @@ vimperator.Commands = function () //{{{
             }
             else if (/^\d+$/.test(args))
             {
-                level = parseInt(args);
+                level = parseInt(args, 10);
             }
             else if (/^[+-]\d+$/.test(args))
             {
-                level = vimperator.buffer.textZoom + parseInt(args);
+                level = vimperator.buffer.textZoom + parseInt(args, 10);
 
                 // relative args shouldn't take us out of range
                 if (level < 1)
diff --git a/content/hints.js b/content/hints.js
index cbaad1ee..7a3a6742 100644
--- a/content/hints.js
+++ b/content/hints.js
@@ -290,7 +290,7 @@ vimperator.Hints = function () //{{{
         var doc = win.document;
         var elem, i;
 
-        //var hintId = parseInt(id, nums.length);
+        //var hintId = parseInt(id, nums.length, 10);
         //elem = doc.getElementById(prefix + hintId);
         elem = doc.getElementById(HINT_PREFIX + id);
 
@@ -329,7 +329,7 @@ vimperator.Hints = function () //{{{
         }
 
         for (var i = 0; i < str.length; i++)
-            result += (hintCharacters.charAt(parseInt(str[i], hintCharacters.length))).toUpperCase();
+            result += (hintCharacters.charAt(parseInt(str[i], hintCharacters.length, 10))).toUpperCase();
 
         return result;
     }