diff --git a/README.rst b/README.rst
index 394f28d9..918bdcea 100644
--- a/README.rst
+++ b/README.rst
@@ -137,7 +137,7 @@ Output::
 
 Output::
 
-    [1, 2, 3]
+    {1, 2, 3}
 
 **Check a format string at compile time**