diff --git a/performance.rst b/performance.rst
index 9a92c493130..1c99d82af43 100644
--- a/performance.rst
+++ b/performance.rst
@@ -60,7 +60,7 @@ container into a single file, which could improve performance when using
# config/services.yaml
parameters:
# ...
- .container.dumper.inline_factories: true
+ container.dumper.inline_factories: true
.. code-block:: xml
@@ -72,7 +72,7 @@ container into a single file, which could improve performance when using
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