diff --git a/lib/server/spawnify.js b/lib/server/spawnify.js
index 6a1fa5ef..01b093a4 100644
--- a/lib/server/spawnify.js
+++ b/lib/server/spawnify.js
@@ -17,9 +17,16 @@
                 callback(error, stdout, stderr);
             };
         
-        сommand    = args.shift();
+        Util.checkArgs(arguments, ['command', 'callback']);
         
-        error       = Util.exec.tryLog(function() {
+        if (!callback) {
+            callback    = options;
+            options     = null;
+        }
+        
+        сommand = args.shift();
+        
+        error   = Util.exec.tryLog(function() {
             cmd = spawn(сommand, args, options);
         });