diff --git a/app/code/community/Sitewards/B2BProfessional/Model/Observer.php b/app/code/community/Sitewards/B2BProfessional/Model/Observer.php
index 51e318d..b911384 100644
--- a/app/code/community/Sitewards/B2BProfessional/Model/Observer.php
+++ b/app/code/community/Sitewards/B2BProfessional/Model/Observer.php
@@ -251,9 +251,12 @@ protected function removePriceFilter($oBlock)
     {
         $aFilterableAttributes    = $oBlock->getData('_filterable_attributes');
         $aNewFilterableAttributes = array();
-        foreach ($aFilterableAttributes as $oFilterableAttribute) {
-            if ($oFilterableAttribute->getAttributeCode() != 'price') {
-                $aNewFilterableAttributes[] = $oFilterableAttribute;
+        
+        if (is_array($aFilterableAttributes) || is_object($aFilterableAttributes)) {
+            foreach ($aFilterableAttributes as $oFilterableAttribute) {
+                if ($oFilterableAttribute->getAttributeCode() != 'price') {
+                    $aNewFilterableAttributes[] = $oFilterableAttribute;
+                } 
             }
         }
         $oBlock->setData('_filterable_attributes', $aNewFilterableAttributes);
@@ -308,4 +311,4 @@ protected function getEventsProduct(Varien_Event_Observer $oObserver)
     {
         return $oObserver->getProduct();
     }
-}
\ No newline at end of file
+}