diff --git a/src/Core/Cache/CacheFlusher.php b/src/Core/Cache/MemberCacheFlusher.php
similarity index 62%
rename from src/Core/Cache/CacheFlusher.php
rename to src/Core/Cache/MemberCacheFlusher.php
index 6d5788415..63f872b4e 100644
--- a/src/Core/Cache/CacheFlusher.php
+++ b/src/Core/Cache/MemberCacheFlusher.php
@@ -6,11 +6,11 @@ namespace SilverStripe\Core\Cache;
  * Defines a service that can flush its cache for a list of members
  * @package SilverStripe\Core\Cache
  */
-interface CacheFlusher
+interface MemberCacheFlusher
 {
     /**
-     * @param null $ids
+     * @param null $memberIDs
      * @return mixed
      */
-    public function flushCache($ids = null);
+    public function flushMemberCache($memberIDs = null);
 }
\ No newline at end of file
diff --git a/src/Security/InheritedPermissionFlusher.php b/src/Security/InheritedPermissionFlusher.php
index bd784fa3b..440d88a7f 100644
--- a/src/Security/InheritedPermissionFlusher.php
+++ b/src/Security/InheritedPermissionFlusher.php
@@ -6,7 +6,7 @@ use Psr\Log\InvalidArgumentException;
 use SilverStripe\Core\Flushable;
 use SilverStripe\ORM\DataExtension;
 use SilverStripe\ORM\DataObject;
-use SilverStripe\Core\Cache\CacheFlusher;
+use SilverStripe\Core\Cache\MemberCacheFlusher;
 
 class InheritedPermissionFlusher extends DataExtension implements Flushable
 {
@@ -48,11 +48,11 @@ class InheritedPermissionFlusher extends DataExtension implements Flushable
     public function setServices($services)
     {
         foreach ($services as $service) {
-            if (!$service instanceof CacheFlusher) {
+            if (!$service instanceof MemberCacheFlusher) {
                 throw new InvalidArgumentException(sprintf(
                     '%s.services must contain only %s instances. %s provided.',
                     __CLASS__,
-                    CacheFlusher::class,
+                    MemberCacheFlusher::class,
                     get_class($service)
                 ));
             }
@@ -78,7 +78,7 @@ class InheritedPermissionFlusher extends DataExtension implements Flushable
     {
         $ids = $this->getMemberIDList();
         foreach ($this->services as $service) {
-            $service->flushCache($ids);
+            $service->flushMemberCache($ids);
         }
     }
 
diff --git a/tests/php/Security/InheritedPermissionsFlusherTest/TestCacheFlusher.php b/tests/php/Security/InheritedPermissionsFlusherTest/TestCacheFlusher.php
index b6a3c17f6..b3e5972ab 100644
--- a/tests/php/Security/InheritedPermissionsFlusherTest/TestCacheFlusher.php
+++ b/tests/php/Security/InheritedPermissionsFlusherTest/TestCacheFlusher.php
@@ -3,9 +3,9 @@
 namespace SilverStripe\Security\Tests\InheritedPermissionsFlusherTest;
 
 use Psr\SimpleCache\CacheInterface;
-use SilverStripe\Core\Cache\CacheFlusher;
+use SilverStripe\Core\Cache\MemberCacheFlusher;
 
-class TestCacheFlusher implements CacheFlusher
+class TestCacheFlusher implements MemberCacheFlusher
 {
     /**
      * @var array
@@ -32,22 +32,22 @@ class TestCacheFlusher implements CacheFlusher
 
     /**
      * Clear the cache for this instance only
-     * @param array $ids A list of member IDs
+     * @param array $memberIDs A list of member IDs
      */
-    public function flushCache($ids = null)
+    public function flushMemberCache($memberIDs = null)
     {
         if (!$this->cache) {
             return;
         }
 
         // Hard flush, e.g. flush=1
-        if (!$ids) {
+        if (!$memberIDs) {
             $this->cache->clear();
         }
 
-        if ($ids && is_array($ids)) {
+        if ($memberIDs && is_array($memberIDs)) {
             foreach (self::$categories as $category) {
-                foreach ($ids as $memberID) {
+                foreach ($memberIDs as $memberID) {
                     $key = $this->generateCacheKey($category, $memberID);
                     $this->cache->delete($key);
                 }