diff --git a/flask_security/views.py b/flask_security/views.py
index 359ec97..5a02c83 100644
--- a/flask_security/views.py
+++ b/flask_security/views.py
@@ -60,7 +60,7 @@ def authenticate():
         msg = str(e)
 
     except Exception, e:
-        msg = 'Uknown authentication error'
+        msg = 'Unknown authentication error'
 
     do_flash(msg, 'error')