diff --git a/include/lib/http_input.class.php b/include/lib/http_input.class.php
index ac3b1d9e2..60b03a103 100644
--- a/include/lib/http_input.class.php
+++ b/include/lib/http_input.class.php
@@ -110,7 +110,7 @@ class HttpInput
             }
             else if ($p_type=="array")
             {
-                 if (trim($this->array[$p_name]) == "" )
+                 if ( empty($this->array[$p_name]) )
                 {
                     $this->array[$p_name]=$this->empty;
                 }