diff --git a/watcher/api/acl.py b/watcher/api/acl.py
index 093f4d9ef..82a0f236b 100644
--- a/watcher/api/acl.py
+++ b/watcher/api/acl.py
@@ -35,7 +35,7 @@ CONF.register_opts(AUTH_OPTS)
 def install(app, conf, public_routes):
     """Install ACL check on application.
 
-    :param app: A WSGI applicatin.
+    :param app: A WSGI application.
     :param conf: Settings. Dict'ified and passed to keystonemiddleware
     :param public_routes: The list of the routes which will be allowed to
                           access without authentication.