diff --git a/docs/50_Components/Card.md b/docs/50_Components/Card.md
index 99d0bd89207351fea00b56d163c516e2dfe95d1c..2cb8563e23d2ae05455ac76c8df92bc4df615cc2 100644
--- a/docs/50_Components/Card.md
+++ b/docs/50_Components/Card.md
@@ -33,11 +33,11 @@ Set to true to show it; default: none of it is visible
 
 Key         | Description
 ---         | ---
-tb-collaps  | 
-tb-expand   | it is added automatically if you set 'state'=>'collapsed'
-tb-maximize |
-tb-minimize | it is added automatically if you set 'state'=>'maximized'
-tb-remove   | 
+tb-collapse | show minus icon to collapse widget
+tb-expand   | show plus button to expand; it is added automatically if you set 'state'=>'collapsed'
+tb-maximize | show maximize button
+tb-minimize | show minimize button; it is added automatically if you set 'state'=>'maximized'
+tb-remove   | show cross button to remove widget
 
 Content:
 
diff --git a/public_html/classes/render-adminlte.class.php b/public_html/classes/render-adminlte.class.php
index f6fa69e137d0ccbf2bf48389085dcbdda4f02cf2..c48847c832060a11b988583145534f5980d6fe65 100755
--- a/public_html/classes/render-adminlte.class.php
+++ b/public_html/classes/render-adminlte.class.php
@@ -476,13 +476,15 @@ class renderadminlte {
     public function getButton($aOptions){
         $aOptions=$this->_ensureOptions($aOptions, ['type', 'size', 'class', 'text', 'icon']);
         $aElement=$aOptions;
-        $aElement['class']='btn '
+        $aElement['class']='btn'
                 .($aOptions['class'] ? ' '.$aOptions['class'] : '')
                 .($aOptions['type'] ? ' btn-'.$aOptions['type'] : '')
                 .($aOptions['size'] ? ' btn-'.$aOptions['size'] : '')
                 ;
         $aElement['label']=$aOptions['text'] ? $aOptions['text'] : ' ';
-        unset($aElement['_infos']);
+        foreach(['_infos', 'type', 'size', 'icon', 'text'] as $sDeleteKey){
+            unset($aElement[$sDeleteKey]);
+        }
         return $this->_tag('button', $aElement);
     }
 
@@ -530,7 +532,7 @@ class renderadminlte {
      *                          - state   - one of [none]|collapsed|maximized
      * 
      *                        >> toolbar icons - set to true to show it; default: none of it is visible
-     *                         - tb-collaps
+     *                         - tb-collapse
      *                         - tb-expand    it is added automatically if you set 'state'=>'collapsed'
      *                         - tb-maximize 
      *                         - tb-minimize  it is added automatically if you set 'state'=>'maximized'
@@ -559,7 +561,7 @@ class renderadminlte {
             'maximized'=>[ 'class'=>'maximized-card', 'tool'=>'tb-minimize'],
         ];
         $aTools=[
-            'tb-collaps'=>'<button type="button" class="btn btn-tool" data-card-widget="collapse"><i class="fas fa-minus"></i></button>',
+            'tb-collapse'=>'<button type="button" class="btn btn-tool" data-card-widget="collapse"><i class="fas fa-minus"></i></button>',
             'tb-expand'=>'<button type="button" class="btn btn-tool" data-card-widget="collapse"><i class="fas fa-plus"></i></button>',
 
             'tb-maximize'=>'<button type="button" class="btn btn-tool" data-card-widget="maximize"><i class="fas fa-expand"></i></button>',