diff --git a/README.md b/README.md
index c25e8b4..90117a5 100644
--- a/README.md
+++ b/README.md
@@ -1402,9 +1402,9 @@ def tracer(func):
     def out(*args, **kwargs):
         result = func(*args, **kwargs)
         arg_list = [repr(x) for x in args]
-        arg_list += [f'{k}={v}' for k, v in kwargs.items()]
+        arg_list += [f'{k}={v!r}' for k, v in kwargs.items()]
         arg_str = ', '.join(arg_list)
-        print(f'{func.__name__}({arg_str}) = {result}')
+        print(f'{func.__name__}({arg_str}) = {result!r}')
         return result
     return out
 ```