diff --git a/core/lib/Thelia/Core/Template/Element/BaseLoop.php b/core/lib/Thelia/Core/Template/Element/BaseLoop.php
index 2aa5e874f..215537431 100644
--- a/core/lib/Thelia/Core/Template/Element/BaseLoop.php
+++ b/core/lib/Thelia/Core/Template/Element/BaseLoop.php
@@ -339,7 +339,7 @@ abstract class BaseLoop
     public function count()
     {
         $hash = $this->args->getHash();
-        if(false === array_key_exists($hash, self::$cacheCount))
+        if(false === isset(self::$cacheCount[$hash]))
         {
             $count = 0;
             if ($this instanceof PropelSearchLoopInterface) {
@@ -370,7 +370,7 @@ abstract class BaseLoop
     public function exec(&$pagination)
     {
         $hash = $this->args->getHash();
-        if(false === array_key_exists($hash, self::$cacheLoopResult))
+        if(false === isset(self::$cacheLoopResult[$hash]))
         {
             if ($this instanceof PropelSearchLoopInterface) {
                 $searchModelCriteria = $this->buildModelCriteria();
diff --git a/core/lib/Thelia/Core/Template/Loop/Argument/Argument.php b/core/lib/Thelia/Core/Template/Loop/Argument/Argument.php
index 0ba86e7d0..56100e490 100644
--- a/core/lib/Thelia/Core/Template/Loop/Argument/Argument.php
+++ b/core/lib/Thelia/Core/Template/Loop/Argument/Argument.php
@@ -56,6 +56,11 @@ class Argument
         return $this->type->getFormattedValue($this->value);
     }
 
+    public function getRawValue()
+    {
+        return $this->value;
+    }
+
     public function setValue($value)
     {
         if ($value === null) {
@@ -147,4 +152,5 @@ class Argument
             $empty
         );
     }
+
 }
diff --git a/core/lib/Thelia/Core/Template/Loop/Argument/ArgumentCollection.php b/core/lib/Thelia/Core/Template/Loop/Argument/ArgumentCollection.php
index 7f5a604c5..eb815c708 100644
--- a/core/lib/Thelia/Core/Template/Loop/Argument/ArgumentCollection.php
+++ b/core/lib/Thelia/Core/Template/Loop/Argument/ArgumentCollection.php
@@ -153,6 +153,11 @@ class ArgumentCollection implements \Iterator
             unset($arguments['name']);
         }
 
-        return sha1(serialize($arguments));
+        $string = '';
+        foreach ($arguments as $key => $argument) {
+            $string .= $key.'='.$argument->getRawValue();
+        }
+
+        return md5($string);
     }
 }