diff --git a/classes/Tools.php b/classes/Tools.php
index a3e8f1c10..563dee308 100644
--- a/classes/Tools.php
+++ b/classes/Tools.php
@@ -2044,10 +2044,10 @@ FileETag INode MTime Size
 		if (is_null($smarty))
 			$smarty = Context::getContext()->smarty;
 		
-		if (!tpl && is_null(cache_id) && is_null(compile_id))
+		if (!$tpl && $cache_id === null && $compile_id === null)
 			return $smarty->clearAllCache();
-		else
-			return $smarty->clearCache($template, $cache_id, $compile_id);
+
+		return $smarty->clearCache($template, $cache_id, $compile_id);
 	}
 
 	/**