diff --git a/controller/controller.py b/controller/controller.py
index 0781f73..ae53570 100644
--- a/controller/controller.py
+++ b/controller/controller.py
@@ -11,7 +11,7 @@ SENSOR_TYPE = Adafruit_DHT.DHT11
 if len(sys.argv) == 2:
     owner = sys.argv[1]
 else:
-    print 'usage: sudo ./controler.py [OWNER]#'
+    print 'usage: sudo ./controller.py [OWNER]#'
     print 'example: sudo ./controller.py Senad - Send temperature as Senad'
     sys.exit(1)