diff --git a/js/src/qgrid.booleanfilter.js b/js/src/qgrid.booleanfilter.js
index 574306d2..a32dc260 100644
--- a/js/src/qgrid.booleanfilter.js
+++ b/js/src/qgrid.booleanfilter.js
@@ -8,7 +8,7 @@ class BooleanFilter extends filter_base.FilterBase {
       <div class='boolean-filter grid-filter qgrid-dropdown-menu'>
         <h3 class='qgrid-popover-title'>
           <div class='dropdown-title'>Filter by ${this.field}</div>
-          <i class='fa fa-times icon-remove close-button'/>
+          <i class='fa fa-times icon-remove close-button'></i>
         </h3>
         <div class='dropdown-body'>
           <form>
diff --git a/js/src/qgrid.datefilter.js b/js/src/qgrid.datefilter.js
index a4cf8acd..d5356b16 100644
--- a/js/src/qgrid.datefilter.js
+++ b/js/src/qgrid.datefilter.js
@@ -8,7 +8,7 @@ class DateFilter extends filter_base.FilterBase {
       <div class='date-range-filter grid-filter qgrid-dropdown-menu'>
         <h3 class='qgrid-popover-title'>
           <div class='dropdown-title'>Filter by ${this.field}</div>
-          <i class='fa fa-times icon-remove close-button'/>
+          <i class='fa fa-times icon-remove close-button'></i>
         </h3>
         <div class='dropdown-body'>
           <input class='datepicker ignore start-date'/>
diff --git a/js/src/qgrid.sliderfilter.js b/js/src/qgrid.sliderfilter.js
index 82517489..734f9530 100644
--- a/js/src/qgrid.sliderfilter.js
+++ b/js/src/qgrid.sliderfilter.js
@@ -7,7 +7,7 @@ class SliderFilter extends filter_base.FilterBase {
       <div class='numerical-filter grid-filter qgrid-dropdown-menu'>
         <h3 class='qgrid-popover-title'>
           <div class='dropdown-title'>Filter by ${this.field}</div>
-          <i class='fa fa-times icon-remove close-button'/>
+          <i class='fa fa-times icon-remove close-button'></i>
         </h3>
         <div class='dropdown-body'>
           <div class='slider-range'/>
diff --git a/js/src/qgrid.textfilter.js b/js/src/qgrid.textfilter.js
index 8204829e..4111a186 100644
--- a/js/src/qgrid.textfilter.js
+++ b/js/src/qgrid.textfilter.js
@@ -9,7 +9,7 @@ class TextFilter extends filter_base.FilterBase {
       <div class='text-filter grid-filter qgrid-dropdown-menu'>
         <h3 class='qgrid-popover-title'>
           <div class='dropdown-title'>Filter by ${this.field}</div>
-          <i class='fa fa-times icon-remove close-button'/>
+          <i class='fa fa-times icon-remove close-button'></i>
         </h3>
         <div class='dropdown-body'>
           <div class='input-area'>