diff --git a/Core/Session.php b/Core/Session.php
index 3089f85e5..881f52802 100644
--- a/Core/Session.php
+++ b/Core/Session.php
@@ -59,7 +59,7 @@ final function offsetUnset($k) {$this->_st->offsetUnset($this->k($k));}
 	 * @used-by s()
 	 */
 	private function __construct() {
-		$this->_prefix = df_class_flc($this);
+		$this->_prefix = df_module_name($this) . '_';
 		$this->_st = df_o($this->c());
 	}
 
@@ -72,7 +72,7 @@ private function __construct() {
 	 * @param string $k [optional]
 	 * @return string
 	 */
-	private function k($k) {return "{$this->_prefix}_$k";}
+	private function k($k) {return $this->_prefix . $k;}
 
 	/**
 	 * 2021-10-27
diff --git a/Core/lib/reflection/main.php b/Core/lib/reflection/main.php
index 1d9687d14..b5af233da 100644
--- a/Core/lib/reflection/main.php
+++ b/Core/lib/reflection/main.php
@@ -65,22 +65,12 @@ function df_class_exists($c) {$c = df_ctr($c); return @class_exists($c);}
  * 2016-01-01
  * 2016-10-20
  * Making $c optional leads to the error «get_class() called without object from outside a class»: https://3v4l.org/k6Hd5
- * @used-by df_class_flc()
  * @used-by df_class_my()
  * @param string|object $c
  * @return string
  */
 function df_class_f($c) {return df_first(df_explode_class($c));}
 
-/**
- * 2021-10-27
- * @see df_class_llc()
- * @used-by \Df\Core\Session::__construct()
- * @param string|object $c
- * @return string
- */
-function df_class_flc($c) {return strtolower(df_class_f($c));}
-
 /**
  * 2017-01-10
  * @uses df_cts() отсекает окончание «\Interceptor»: без этого функция работала бы не так, как мы хотим
@@ -113,6 +103,7 @@ function df_class_l($c) {return df_last(df_explode_class($c));}
 
 /**
  * 2018-01-30
+ * 2021-10-27 @deprecared It is unused.
  * @param string|object $c
  * @return string
  */
diff --git a/Framework/lib/module/name.php b/Framework/lib/module/name.php
index ddf5deed6..4be35e177 100644
--- a/Framework/lib/module/name.php
+++ b/Framework/lib/module/name.php
@@ -27,6 +27,7 @@
  * @used-by df_sentry_module()
  * @used-by df_widget()
  * @used-by dfpm_title()
+ * @used-by \Df\Core\Session::__construct()
  * @used-by \Df\Framework\Plugin\View\Element\AbstractBlock::afterGetModuleName()
  * @used-by \Df\Payment\Method::s()
  * @used-by \Df\Shipping\Method::s()
diff --git a/composer.json b/composer.json
index b75e81516..55b81f6a6 100644
--- a/composer.json
+++ b/composer.json
@@ -1,6 +1,6 @@
 {
 	"name": "mage2pro/core"
-	,"version": "7.8.7"
+	,"version": "7.8.8"
 	,"description": "Mage2.PRO core package."
 	,"type": "magento2-module"
 	,"homepage": "https://mage2.pro"