diff --git a/README.md b/README.md
index a7a684f..2a3b001 100644
--- a/README.md
+++ b/README.md
@@ -3,7 +3,7 @@
 Finds the top N words by count on wikipedia
 
 ### How to test it
-    $ docker build -t wiki_app
+    $ docker build -t wiki_app .
     $ nohup docker run -p 5000:5000 wiki_app &
   
 Then with a browser open http://127.0.0.1:5000/v1/getinfo/en/21721040/5/