diff --git a/README.md b/README.md
index 8507bef..0433867 100644
--- a/README.md
+++ b/README.md
@@ -606,7 +606,7 @@ class <name>:
         self.a = a
     def __repr__(self):
         class_name = type(self).__name__
-        return f'{class_name}({self.a:!r})'
+        return f'{class_name}({self.a!r})'
     def __str__(self):
         return str(self.a)