diff --git a/lib/Cake/Cache/CacheEngine.php b/lib/Cake/Cache/CacheEngine.php
index 5af9ee4df..3226ad067 100644
--- a/lib/Cake/Cache/CacheEngine.php
+++ b/lib/Cake/Cache/CacheEngine.php
@@ -126,9 +126,11 @@ abstract class CacheEngine {
  * the same result.
  *
  * @param string $groups name of the group to be cleared
- * @return void
+ * @return boolean
  **/
-	abstract public function clearGroup($group);
+	public function clearGroup($group) {
+		return false;
+	}
 
 /**
  * Does whatever initialization for each group is required