diff --git a/pymunk/shapes.py b/pymunk/shapes.py
index d22ae354..65eaf65a 100644
--- a/pymunk/shapes.py
+++ b/pymunk/shapes.py
@@ -564,7 +564,7 @@ def set_neighbors(
 
 
 class Poly(Shape):
-    """A convex polygon shape
+    """A convex polygon shape.
 
     Slowest, but most flexible collision shape.
     """