diff --git a/framework/CHANGELOG.md b/framework/CHANGELOG.md
index f800c00948..c18de44006 100644
--- a/framework/CHANGELOG.md
+++ b/framework/CHANGELOG.md
@@ -3,6 +3,7 @@ Yii Framework 2 Change Log
 
 2.0.16 under development
 ------------------------
+- Bug #14901: Fixed trim validation for radio/checkbox button (s1lver)
 - Bug #16527: Fixed return content for `\yii\widgets\ActiveForm::run()` (carono)
 - Bug #15826: Fixed JavaScript compareValidator in `yii.validation.js` for attributes not in rules (mgrechanik)
 - Enh #16365: Added $filterOnFocusOut option for GridView (s1lver)
diff --git a/framework/assets/yii.validation.js b/framework/assets/yii.validation.js
index 710977d961..7809b6f9fa 100644
--- a/framework/assets/yii.validation.js
+++ b/framework/assets/yii.validation.js
@@ -236,9 +236,15 @@ yii.validation = (function ($) {
             }
         },
 
-        trim: function ($form, attribute, options) {
+        trim: function ($form, attribute, options, value) {
             var $input = $form.find(attribute.input);
-            var value = $input.val();
+            var isCheckAble = $input.find('[type=radio]').is('[type=radio]') || $input.find('[type=checkbox]').is('[type=checkbox]');
+
+            if (!isCheckAble) {
+                return value;
+            }
+
+            value = $input.val();
             if (!options.skipOnEmpty || !pub.isEmpty(value)) {
                 value = $.trim(value);
                 $input.val(value);
diff --git a/framework/validators/FilterValidator.php b/framework/validators/FilterValidator.php
index 84e820d747..873e1b197e 100644
--- a/framework/validators/FilterValidator.php
+++ b/framework/validators/FilterValidator.php
@@ -91,7 +91,7 @@ class FilterValidator extends Validator
         ValidationAsset::register($view);
         $options = $this->getClientOptions($model, $attribute);
 
-        return 'value = yii.validation.trim($form, attribute, ' . json_encode($options, JSON_UNESCAPED_SLASHES | JSON_UNESCAPED_UNICODE) . ');';
+        return 'value = yii.validation.trim($form, attribute, ' . json_encode($options, JSON_UNESCAPED_SLASHES | JSON_UNESCAPED_UNICODE) . ', value);';
     }
 
     /**