diff --git a/contribs/gmf/src/layertree/component.html b/contribs/gmf/src/layertree/component.html
index 893a25d60ded..56bd712976f0 100644
--- a/contribs/gmf/src/layertree/component.html
+++ b/contribs/gmf/src/layertree/component.html
@@ -162,7 +162,6 @@
             <i class="fa fa-th-list fa-fw"></i>
             <a
               ng-click="::gmfLayertreeCtrl.toggleNodeLegend('#gmf-layertree-node-' + layertreeCtrl.uid + '-legend'); popoverCtrl.dismissPopover()"
-              data-toggle="collapse"
               href="">
               {{'Show/hide legend'|translate}}
             </a>
@@ -222,7 +221,6 @@
   <a
     class="gmf-layertree-node-menu-togglelegend"
     ng-if="::gmfLayertreeCtrl.supportsLegend(layertreeCtrl)"
-    data-toggle="collapse"
     ng-click="::gmfLayertreeCtrl.toggleNodeLegend('#gmf-layertree-node-' + layertreeCtrl.uid + '-legend')"
     href="">
     <span
@@ -240,7 +238,6 @@
 
   <a
     title="{{'Hide legend'|translate}}"
-    data-toggle="collapse"
     ng-click="::gmfLayertreeCtrl.toggleNodeLegend('#gmf-layertree-node-' + layertreeCtrl.uid + '-legend')"
     href="">
     {{'Hide legend'|translate}}