diff --git a/_pytest/config.py b/_pytest/config.py
index 5df198e21..f478b1b67 100644
--- a/_pytest/config.py
+++ b/_pytest/config.py
@@ -594,7 +594,7 @@ class Argument:
                 if typ == 'choice':
                     warnings.warn(
                         'type argument to addoption() is a string %r.'
-                        ' For parsearg this is optional and when supplied '
+                        ' For parsearg this is optional and when supplied'
                         ' should be a type.'
                         ' (options: %s)' % (typ, names),
                         DeprecationWarning,