diff --git a/src/Cache/Engine/ApcEngine.php b/src/Cache/Engine/ApcEngine.php
index 80ae4dc48e9..cddcf86be9f 100644
--- a/src/Cache/Engine/ApcEngine.php
+++ b/src/Cache/Engine/ApcEngine.php
@@ -16,7 +16,6 @@
 
 use APCIterator;
 use Cake\Cache\CacheEngine;
-use Cake\Utility\Inflector;
 
 /**
  * APC storage engine for cache
@@ -41,9 +40,6 @@ class ApcEngine extends CacheEngine {
  * @return bool True if the engine has been successfully initialized, false if not
  */
 	public function init(array $config = []) {
-		if (!isset($config['prefix'])) {
-			$config['prefix'] = Inflector::slug(APP_DIR) . '_';
-		}
 		parent::init($config);
 		return function_exists('apc_dec');
 	}
diff --git a/src/Cache/Engine/MemcachedEngine.php b/src/Cache/Engine/MemcachedEngine.php
index 14ce2970d57..bcd8a64f8cc 100644
--- a/src/Cache/Engine/MemcachedEngine.php
+++ b/src/Cache/Engine/MemcachedEngine.php
@@ -15,7 +15,6 @@
 namespace Cake\Cache\Engine;
 
 use Cake\Cache\CacheEngine;
-use Cake\Utility\Inflector;
 use InvalidArgumentException;
 use Memcached;
 
@@ -102,10 +101,6 @@ public function init(array $config = []) {
 			return false;
 		}
 
-		if (!isset($config['prefix'])) {
-			$config['prefix'] = Inflector::slug(APP_DIR) . '_';
-		}
-
 		$this->_serializers = [
 			'igbinary' => Memcached::SERIALIZER_IGBINARY,
 			'json' => Memcached::SERIALIZER_JSON,
diff --git a/src/Cache/Engine/WincacheEngine.php b/src/Cache/Engine/WincacheEngine.php
index 5dd177adc1d..1d2f6a6f31c 100644
--- a/src/Cache/Engine/WincacheEngine.php
+++ b/src/Cache/Engine/WincacheEngine.php
@@ -15,7 +15,6 @@
 namespace Cake\Cache\Engine;
 
 use Cake\Cache\CacheEngine;
-use Cake\Utility\Inflector;
 
 /**
  * Wincache storage engine for cache
@@ -41,9 +40,6 @@ class WincacheEngine extends CacheEngine {
  * @return bool True if the engine has been successfully initialized, false if not
  */
 	public function init(array $config = []) {
-		if (!isset($config['prefix'])) {
-			$config['prefix'] = Inflector::slug(APP_DIR) . '_';
-		}
 		parent::init($config);
 		return function_exists('wincache_ucache_info');
 	}
diff --git a/src/Cache/Engine/XcacheEngine.php b/src/Cache/Engine/XcacheEngine.php
index 64eae5dc3f3..4e270e235a5 100644
--- a/src/Cache/Engine/XcacheEngine.php
+++ b/src/Cache/Engine/XcacheEngine.php
@@ -15,7 +15,6 @@
 namespace Cake\Cache\Engine;
 
 use Cake\Cache\CacheEngine;
-use Cake\Utility\Inflector;
 
 /**
  * Xcache storage engine for cache
@@ -58,9 +57,6 @@ class XcacheEngine extends CacheEngine {
  */
 	public function init(array $config = []) {
 		if (php_sapi_name() !== 'cli') {
-			if (!isset($config['prefix'])) {
-				$config['prefix'] = Inflector::slug(APP_DIR) . '_';
-			}
 			parent::init($config);
 			return function_exists('xcache_info');
 		}