diff --git a/qutebrowser/config/sections.py b/qutebrowser/config/sections.py
index 0253777cc..bedde27aa 100644
--- a/qutebrowser/config/sections.py
+++ b/qutebrowser/config/sections.py
@@ -73,7 +73,7 @@ class Section:
         return self.values.keys()
 
     def delete(self, key):
-        """Delete item with given key"""
+        """Delete item with given key."""
         del self.values[key]
 
     def setv(self, layer, key, value, interpolated):