diff --git a/classes/controller/AdminController.php b/classes/controller/AdminController.php
index cc86d5234..c91102bb6 100644
--- a/classes/controller/AdminController.php
+++ b/classes/controller/AdminController.php
@@ -2073,7 +2073,7 @@ class AdminControllerCore extends Controller
 			foreach ($this->fields_list as $key => $array_value)
 			{
 				// Add it only if it is not already in $this->_select
-				if (isset($this->_select) && preg_match('/'.preg_quote($key, '/').'`?\s*,/', $this->_select))
+				if (isset($this->_select) && preg_match('/[\s]`?'.preg_quote($key, '/').'`?\s*,/', $this->_select))
 					continue;
 			
 				if (isset($array_value['filter_key']))
@@ -2790,5 +2790,4 @@ class AdminControllerCore extends Controller
 		// No content, return false
 		return false;
 	}
-}
-
+}
\ No newline at end of file