diff --git a/sanic/app.py b/sanic/app.py
index acdf70c8..5af21751 100644
--- a/sanic/app.py
+++ b/sanic/app.py
@@ -170,7 +170,7 @@ class Sanic:
                 return handler
             else:
                 raise ValueError(
-                    'Required parameter `request` missing'
+                    'Required parameter `request` missing '
                     'in the {0}() route?'.format(
                         handler.__name__))