diff --git a/modules/contrib/biblio/modules/CiteProc/CSL.inc b/modules/contrib/biblio/modules/CiteProc/CSL.inc
index 4eaa39d..3888a21 100644
--- a/modules/contrib/biblio/modules/CiteProc/CSL.inc
+++ b/modules/contrib/biblio/modules/CiteProc/CSL.inc
@@ -842,6 +842,7 @@ class csl_names extends csl_format {
           $text .= $element->render($authors, $mode);
           // String replace the weird spacing with " ,"
           $text = str_replace(" ,", ",", $text);
+          $text = rtrim($text);
         }
       }
       if (!empty($text)) $variable_parts[] = $text;