diff --git a/src/main/resources/update/gitbucket-core_4.14.xml b/src/main/resources/update/gitbucket-core_4.14.xml
index a6e9d53..9f8a9a7 100644
--- a/src/main/resources/update/gitbucket-core_4.14.xml
+++ b/src/main/resources/update/gitbucket-core_4.14.xml
@@ -5,7 +5,7 @@
     <column name="REPOSITORY_NAME" type="varchar(100)" nullable="false"/>
     <column name="PRIORITY_ID" type="int" nullable="false" autoIncrement="true" unique="true"/>
     <column name="PRIORITY_NAME" type="varchar(100)" nullable="false"/>
-    <column name="DESCRIPTION" type="varchar(255)" nullable="false"/>
+    <column name="DESCRIPTION" type="varchar(255)" nullable="true"/>
     <column name="ORDERING" type="int" nullable="false"/>
     <column name="IS_DEFAULT" type="boolean" nullable="false"/>
     <column name="COLOR" type="char(6)" nullable="false"/>
diff --git a/src/main/scala/gitbucket/core/controller/PrioritiesController.scala b/src/main/scala/gitbucket/core/controller/PrioritiesController.scala
index a1e200a..3adae1a 100644
--- a/src/main/scala/gitbucket/core/controller/PrioritiesController.scala
+++ b/src/main/scala/gitbucket/core/controller/PrioritiesController.scala
@@ -20,7 +20,7 @@
 
   val priorityForm = mapping(
     "priorityName"  -> trim(label("Priority name", text(required, priorityName, uniquePriorityName, maxlength(100)))),
-    "description"   -> trim(label("Description", text(required, maxlength(255)))),
+    "description"   -> trim(label("Description", text(maxlength(255)))),
     "priorityColor" -> trim(label("Color", text(required, color)))
   )(PriorityForm.apply)
 
diff --git a/src/main/scala/gitbucket/core/model/Priorities.scala b/src/main/scala/gitbucket/core/model/Priorities.scala
index f625efd..eb31740 100644
--- a/src/main/scala/gitbucket/core/model/Priorities.scala
+++ b/src/main/scala/gitbucket/core/model/Priorities.scala
@@ -12,7 +12,7 @@
     val ordering = column[Int]("ORDERING")
     val isDefault = column[Boolean]("IS_DEFAULT")
     val color = column[String]("COLOR")
-    def * = (userName, repositoryName, priorityId, priorityName, description, isDefault, ordering, color) <> (Priority.tupled, Priority.unapply)
+    def * = (userName, repositoryName, priorityId, priorityName, description.?, isDefault, ordering, color) <> (Priority.tupled, Priority.unapply)
 
     def byPrimaryKey(owner: String, repository: String, priorityId: Int) = byPriority(owner, repository, priorityId)
     def byPrimaryKey(userName: Rep[String], repositoryName: Rep[String], priorityId: Rep[Int]) = byPriority(userName, repositoryName, priorityId)
@@ -24,7 +24,7 @@
   repositoryName: String,
   priorityId: Int = 0,
   priorityName: String,
-  description: String,
+  description: Option[String],
   isDefault: Boolean,
   ordering: Int = 0,
   color: String){
diff --git a/src/main/scala/gitbucket/core/service/PrioritiesService.scala b/src/main/scala/gitbucket/core/service/PrioritiesService.scala
index 7ab752d..f5a867d 100644
--- a/src/main/scala/gitbucket/core/service/PrioritiesService.scala
+++ b/src/main/scala/gitbucket/core/service/PrioritiesService.scala
@@ -3,6 +3,7 @@
 import gitbucket.core.model.Priority
 import gitbucket.core.model.Profile._
 import gitbucket.core.model.Profile.profile.blockingApi._
+import gitbucket.core.util.StringUtil
 
 trait PrioritiesService {
 
@@ -29,7 +30,7 @@
       userName       = owner,
       repositoryName = repository,
       priorityName   = priorityName,
-      description    = description,
+      description    = StringUtil.emptyToNone(description),
       isDefault      = isDefault,
       ordering       = ordering,
       color          = color
@@ -39,8 +40,8 @@
   def updatePriority(owner: String, repository: String, priorityId: Int, priorityName: String, description: String, color: String)
                  (implicit s: Session): Unit =
     Priorities.filter(_.byPrimaryKey(owner, repository, priorityId))
-          .map(t => (t.priorityName, t.description, t.color))
-          .update(priorityName, description, color)
+          .map(t => (t.priorityName, t.description.?, t.color))
+          .update(priorityName, StringUtil.emptyToNone(description), color)
 
   def reorderPriorities(owner: String, repository: String, order: Map[Int, Int])
                     (implicit s: Session): Unit = {
diff --git a/src/main/scala/gitbucket/core/util/StringUtil.scala b/src/main/scala/gitbucket/core/util/StringUtil.scala
index d1eadf3..2b0bb6c 100644
--- a/src/main/scala/gitbucket/core/util/StringUtil.scala
+++ b/src/main/scala/gitbucket/core/util/StringUtil.scala
@@ -137,5 +137,5 @@
 //    b.toString
 //  }
 
-
+  def emptyToNone(str: String): Option[String] = Option(str).map(_.trim).flatMap(s => if (s.isEmpty) None else Some(s));
 }
diff --git a/src/main/twirl/gitbucket/core/issues/issueinfo.scala.html b/src/main/twirl/gitbucket/core/issues/issueinfo.scala.html
index 012ad0a..4b0fb88 100644
--- a/src/main/twirl/gitbucket/core/issues/issueinfo.scala.html
+++ b/src/main/twirl/gitbucket/core/issues/issueinfo.scala.html
@@ -43,7 +43,7 @@
         <li><a href="javascript:void(0);" class="priority" data-id=""><i class="octicon octicon-x"></i> Clear priority</a></li>
         @priorities.map { priority =>
           <li>
-            <a href="javascript:void(0);" class="priority" data-id="@priority.priorityId" data-name="@priority.priorityName" data-color="#@priority.color" data-font-color="#@priority.fontColor" title="@priority.description">
+            <a href="javascript:void(0);" class="priority" data-id="@priority.priorityId" data-name="@priority.priorityName" data-color="#@priority.color" data-font-color="#@priority.fontColor"@if(!priority.description.isEmpty) { title="@priority.description.get" }>
               @gitbucket.core.helper.html.checkicon(issue.flatMap(_.priorityId).orElse(defaultPriority.map(_.priorityId)).map(id => id == priority.priorityId).getOrElse(false))
               <span class="label" style="background-color: #@priority.color;">&nbsp;</span>
               @priority.priorityName
@@ -57,7 +57,7 @@
 <span id="label-priority">
   @issue.flatMap(_.priorityId).orElse(defaultPriority.map(_.priorityId)).map { priorityId =>
     @priorities.collect { case priority if(priority.priorityId == priorityId) =>
-      <a class="issue-priority" style="background-color: #@priority.color; color: #@priority.fontColor;" href="@helpers.url(repository)/issues?priority=@helpers.urlEncode(priority.priorityName)&state=open" title="@priority.description">@priority.priorityName</a>
+      <a class="issue-priority" style="background-color: #@priority.color; color: #@priority.fontColor;" href="@helpers.url(repository)/issues?priority=@helpers.urlEncode(priority.priorityName)&state=open"@if(!priority.description.isEmpty) { title="@priority.description.get" }>@priority.priorityName</a>
     }
   }.getOrElse {
     <span class="muted small">No priority</span>
diff --git a/src/main/twirl/gitbucket/core/issues/listparts.scala.html b/src/main/twirl/gitbucket/core/issues/listparts.scala.html
index f083189..9ed5013 100644
--- a/src/main/twirl/gitbucket/core/issues/listparts.scala.html
+++ b/src/main/twirl/gitbucket/core/issues/listparts.scala.html
@@ -57,7 +57,7 @@
             </li>
             @priorities.map { priority =>
               <li>
-                <a href="@condition.copy(priority = (if(condition.priority == Some(Some(priority.priorityName))) None else Some(Some(priority.priorityName)))).toURL" title="@priority.description">
+                <a href="@condition.copy(priority = (if(condition.priority == Some(Some(priority.priorityName))) None else Some(Some(priority.priorityName)))).toURL"@if(!priority.description.isEmpty) { title="@priority.description.get" }>
                   @gitbucket.core.helper.html.checkicon(condition.priority == Some(Some(priority.priorityName)))
                   <span style="background-color: #@priority.color;" class="label-color">&nbsp;&nbsp;</span>
                   @priority.priorityName
@@ -157,7 +157,7 @@
             @gitbucket.core.helper.html.dropdown("Priority", filter = ("priority", "Find Priority...")) {
               <li><a href="javascript:void(0);" class="toggle-priority" data-id="">No priority</a></li>
               @priorities.map { priority =>
-                <li><a href="javascript:void(0);" class="toggle-priority" data-id="@priority.priorityId" title="@priority.description">
+                <li><a href="javascript:void(0);" class="toggle-priority" data-id="@priority.priorityId"@if(!priority.description.isEmpty) { title="@priority.description.get" }>
                   <span style="background-color: #@priority.color;" class="label">&nbsp;</span>
                   @priority.priorityName</a></li>
               }
@@ -244,7 +244,7 @@
           <div class="small muted" style="margin-left: 12px; margin-top: 2px;">
             #@issue.issueId opened @gitbucket.core.helper.html.datetimeago(issue.registeredDate) by @helpers.user(issue.openedUserName, styleClass="username")
             @priority.map(priority => priorities.filter(p => p.priorityName == priority).head).map { priority =>
-            <span style="margin: 20px;"><a href="@condition.copy(priority = Some(Some(priority.priorityName))).toURL" class="username" title="@priority.description"><i class="octicon octicon-flame"></i>
+            <span style="margin: 20px;"><a href="@condition.copy(priority = Some(Some(priority.priorityName))).toURL" class="username"@if(!priority.description.isEmpty) { title="@priority.description.get" }><i class="octicon octicon-flame"></i>
               <span class="issue-priority issue-priority-inline" style="background-color: #@priority.color; color: #@priority.fontColor;">@priority.priorityName</span></a></span>
             }
             @milestone.map { milestone =>
diff --git a/src/main/twirl/gitbucket/core/issues/priorities/edit.scala.html b/src/main/twirl/gitbucket/core/issues/priorities/edit.scala.html
index b3dd075..b8342ba 100644
--- a/src/main/twirl/gitbucket/core/issues/priorities/edit.scala.html
+++ b/src/main/twirl/gitbucket/core/issues/priorities/edit.scala.html
@@ -12,7 +12,7 @@
     <script>
     $('div#priority-color-@priorityId').colorpicker({format: "hex"});
     </script>
-    <input type="text" id="description-@priorityId" style="width: 500px; float: left; margin-left: 4px;" class="form-control" value="@priority.map(_.description)" placeholder="Description..." />
+    <input type="text" id="description-@priorityId" style="width: 500px; float: left; margin-left: 4px;" class="form-control" value="@priority.flatMap(_.description).getOrElse("")" placeholder="Description..." />
     <span class="pull-right">
       <span id="priority-error-@priorityId" class="error"></span>
       <input type="button" id="cancel-@priorityId" class="btn btn-default priority-edit-cancel" value="Cancel">
diff --git a/src/main/twirl/gitbucket/core/issues/priorities/priority.scala.html b/src/main/twirl/gitbucket/core/issues/priorities/priority.scala.html
index 5884546..b9e1ad1 100644
--- a/src/main/twirl/gitbucket/core/issues/priorities/priority.scala.html
+++ b/src/main/twirl/gitbucket/core/issues/priorities/priority.scala.html
@@ -19,7 +19,7 @@
         </div>
       </div>
       <div class="@if(hasWritePermission){col-md-6} else {col-md-8}">
-        <span>@priority.description</span>
+        <span>@priority.description.getOrElse("")</span>
       </div>
       <div class="col-md-1">
         <div class="pull-right">