diff --git a/templates/web/prod/preview/reg_train.html b/templates/web/prod/preview/reg_train.html
index d0024aa9bc..d2abde6909 100644
--- a/templates/web/prod/preview/reg_train.html
+++ b/templates/web/prod/preview/reg_train.html
@@ -43,7 +43,7 @@
 
       <li class="{{class}} prevTrainCurrent" style="">
         <img {{tooltip}} jsargs="REG|{{loop.index}}|{{regroupement.get_serialize_key}}"
-          class="openPreview prevRegToolTip" return(false);" src="{{thumbnail.get_url()}}"
+          class="openPreview prevRegToolTip" src="{{thumbnail.get_url()}}"
           style="{{style}}margin:7px;position:relative;"/></li>
     {% endfor %}