diff --git a/rq/utils.py b/rq/utils.py
index 940e622..2339a3f 100644
--- a/rq/utils.py
+++ b/rq/utils.py
@@ -73,7 +73,7 @@ class _Colorizer(object):
         return self.codes["reset"]
 
     def colorize(self, color_key, text):
-        if not sys.stdout.isatty()
+        if not sys.stdout.isatty():
             return text
         else:
             return self.codes[color_key] + text + self.codes["reset"]