diff --git a/src/filesystem/implementation.js b/src/filesystem/implementation.js
index f0f1baf..139d434 100644
--- a/src/filesystem/implementation.js
+++ b/src/filesystem/implementation.js
@@ -1687,19 +1687,19 @@ function mkdtemp(fs, context, prefix, options, callback) {
     return 'xxxxxx'.replace(/[xy]/g, function(c) {
       var r = Math.random()*16|0, v = c == 'x' ? r : (r&0x3|0x8);
       return v.toString(16);
-    })
+    });
   }
   if (prefix) {
-    var path = "/"+prefix+generateRandom();
+    var path = '/'+prefix+generateRandom();
     make_directory(context, path, function(error) {
       if (error) {
-        callback(error, path)
+        callback(error, path);
       } else {
         callback(null, path);
       }
     });
   } else {
-    callback(new Error('filename prefix is required'), prefix)
+    callback(new Error('filename prefix is required'), prefix);
   }  
 }