diff --git a/components/http_foundation/session_configuration.rst b/components/http_foundation/session_configuration.rst
index fdaa7ba7eda..41aacae0e46 100644
--- a/components/http_foundation/session_configuration.rst
+++ b/components/http_foundation/session_configuration.rst
@@ -154,17 +154,16 @@ Configuring Garbage Collection
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
 When a session opens, PHP will call the ``gc`` handler randomly according to the
-probability set by ``session.gc_probability`` / ``session.gc_divisor``. For
-example if these were set to ``5/100`` respectively, it would mean a probability
-of 5%. Similarly, ``3/4`` would mean a 3 in 4 chance of being called, i.e. 75%.
+probability set by ``session.gc_probability`` / ``session.gc_divisor`` in ``php.ini``.
+For example if these were set to ``5/100``, it would mean a probability of 5%.
 
-If the garbage collection handler is invoked, PHP will pass the value stored in
-the ``php.ini`` directive ``session.gc_maxlifetime``. The meaning in this context is
-that any stored session that was saved more than ``gc_maxlifetime`` ago should be
-deleted. This allows one to expire records based on idle time.
+If the garbage collection handler is invoked, PHP will pass the value of
+``session.gc_maxlifetime``, meaning that any stored session that was saved more
+than ``gc_maxlifetime`` seconds ago should be deleted. This allows to expire records
+based on idle time.
 
 However, some operating systems (e.g. Debian) do their own session handling and set
-the ``session.gc_probability`` variable to ``0`` to stop PHP doing garbage
+the ``session.gc_probability`` directive to ``0`` to stop PHP doing garbage
 collection. That's why Symfony now overwrites this value to ``1``.
 
 If you wish to use the original value set in your ``php.ini``, add the following