diff --git a/htdocs/translate.class.php b/htdocs/translate.class.php
index e71b08f28aa..75a1edf630a 100644
--- a/htdocs/translate.class.php
+++ b/htdocs/translate.class.php
@@ -494,6 +494,9 @@ class Translate {
      */
     function getLabelFromKey($db,$key,$tablename,$fieldkey,$fieldlabel)
     {
+		// If key empty
+		if ($key == '') return '';
+		
     	// Check in cache
         if (! empty($this->cache_labels[$tablename][$key]))
         {