diff --git a/www/scripts/codecheckerviewer/CheckerStatistics.js b/www/scripts/codecheckerviewer/CheckerStatistics.js
index 82ab138782..f1f2a5cfb6 100644
--- a/www/scripts/codecheckerviewer/CheckerStatistics.js
+++ b/www/scripts/codecheckerviewer/CheckerStatistics.js
@@ -112,10 +112,8 @@ function (declare, ItemFileWriteStore, dom, Deferred, all, Memory, Observable,
       });
       dom.place(this._uniqueCheckBox.domNode, this.domNode);
 
-      this._uniqueCheckBoxLabel = dom.create('label', {
-        for : this._uniqueCheckBox.get('id'),
-        innerHTML : 'Unique reports'
-      }, this._uniqueCheckBox.domNode, 'after');
+      this._uniqueCheckBoxLabel =
+        util.createLabelForUniqueCheckbox(this._uniqueCheckBox);
     },
 
     refreshGrids : function () {
diff --git a/www/scripts/codecheckerviewer/ListOfBugs.js b/www/scripts/codecheckerviewer/ListOfBugs.js
index a7e0247e03..f54a985412 100644
--- a/www/scripts/codecheckerviewer/ListOfBugs.js
+++ b/www/scripts/codecheckerviewer/ListOfBugs.js
@@ -346,7 +346,7 @@ function (declare, dom, style, Deferred, ObjectStore, Store, QueryResults,
       this._bugFilterView = new BugFilterView({
         class    : 'bug-filters',
         region   : 'left',
-        style    : 'width: 300px; padding: 0px;',
+        style    : 'width: 320px; padding: 0px;',
         splitter : true,
         parent   : this,
         diffView : this.newcheck,
diff --git a/www/scripts/codecheckerviewer/filter/UniqueFilter.js b/www/scripts/codecheckerviewer/filter/UniqueFilter.js
index 364b47e5dd..ad369c3e4b 100644
--- a/www/scripts/codecheckerviewer/filter/UniqueFilter.js
+++ b/www/scripts/codecheckerviewer/filter/UniqueFilter.js
@@ -8,8 +8,9 @@ define([
   'dojo/dom-construct',
   'dojo/_base/declare',
   'dijit/form/CheckBox',
-  'codechecker/filter/FilterBase'],
-function (dom, declare, CheckBox, FilterBase) {
+  'codechecker/filter/FilterBase',
+  'codechecker/util'],
+function (dom, declare, CheckBox, FilterBase, util) {
   return declare(FilterBase, {
     defaultValue : false,
 
@@ -24,10 +25,8 @@ function (dom, declare, CheckBox, FilterBase) {
       });
       dom.place(this._uniqueCheckBox.domNode, this.domNode);
 
-      this._uniqueCheckBoxLabel = dom.create('label', {
-        for : this._uniqueCheckBox.get('id'),
-        innerHTML : 'Unique reports'
-      }, this._uniqueCheckBox.domNode, 'after');
+      this._uniqueCheckBoxLabel =
+        util.createLabelForUniqueCheckbox(this._uniqueCheckBox);
     },
 
     initByUrl : function (queryParams) {
diff --git a/www/scripts/codecheckerviewer/util.js b/www/scripts/codecheckerviewer/util.js
index 21b83d6a9d..9406ee32bb 100644
--- a/www/scripts/codecheckerviewer/util.js
+++ b/www/scripts/codecheckerviewer/util.js
@@ -451,6 +451,18 @@ function (locale, dom, style, json) {
 
       link.click();
       document.body.removeChild(link);
+    },
+
+    createLabelForUniqueCheckbox(uniqueCheckBox) {
+      return dom.create('label', {
+        for : uniqueCheckBox.get('id'),
+        innerHTML : 'Unique reports <i class="icon-help"></i>',
+        title : 'This narrows the report list to unique bug. The same bug may '
+          + 'appear several times if it is found on different control paths, '
+          + 'i.e. through different function calls. By checking '
+          + '"Unique reports" a report appears only once even if it is found '
+          + 'on several paths.'
+      }, uniqueCheckBox.domNode, 'after');
     }
   };
 });
diff --git a/www/style/codecheckerviewer.css b/www/style/codecheckerviewer.css
index e180273b86..9bd91f638a 100644
--- a/www/style/codecheckerviewer.css
+++ b/www/style/codecheckerviewer.css
@@ -616,6 +616,10 @@ html, body {
   margin-left: 10px;
 }
 
+.checker-statistics-filter > label {
+  font-weight: bold;
+}
+
 .component-description {
   list-style: none;
   margin: 0;
diff --git a/www/style/icons.css b/www/style/icons.css
index 1c4538fd67..d85ffd8271 100644
--- a/www/style/icons.css
+++ b/www/style/icons.css
@@ -337,3 +337,20 @@ span[class*="severity-"] {
 .carret-up::before {
   content: "\f0d8";
 }
+
+.icon-help {
+  display: inline-block;
+  text-align: center;
+  background-color: #3680a9;
+  color: white;
+  border-radius: 50%;
+  width: 15px;
+  height: 15px;
+  font-size: 12px;
+  line-height: 15px;
+  cursor: help;
+}
+
+.icon-help:after {
+  content : '?';
+}