diff --git a/sources/Application/UI/DisplayBlock/BlockList/BlockList.php b/sources/Application/UI/DisplayBlock/BlockList/BlockList.php
index 6b3ab9634..7fdbb098d 100644
--- a/sources/Application/UI/DisplayBlock/BlockList/BlockList.php
+++ b/sources/Application/UI/DisplayBlock/BlockList/BlockList.php
@@ -53,7 +53,7 @@ class BlockList extends UIContentBlock
 	{
 		return '$("#'.$this->sId.'").block();
 			$.post("ajax.render.php?operation=refreshDashletList",
-			{ style: "list", filter: "'.$this->sFilter.'", extra_params: '.json_encode($this->aExtraParams).' },
+			{ style: "list", filter: '.json_encode($this->sFilter).', extra_params: '.json_encode($this->aExtraParams).' },
 			function(data){
 				$("#'.$this->sId.'")
 				.empty()