diff --git a/src/main/resources/org/jenkinsci/plugins/gitlab/GitlabBuildTrigger/config.jelly b/src/main/resources/org/jenkinsci/plugins/gitlab/GitlabBuildTrigger/config.jelly
index 008bab5..18e45f1 100644
--- a/src/main/resources/org/jenkinsci/plugins/gitlab/GitlabBuildTrigger/config.jelly
+++ b/src/main/resources/org/jenkinsci/plugins/gitlab/GitlabBuildTrigger/config.jelly
@@ -9,7 +9,7 @@
         <f:textbox />
     </f:entry>
     <f:entry title="${%Crontab line}" field="cron" help="/descriptor/hudson.triggers.TimerTrigger/help/spec">
-        <f:textbox default="${descriptor.cron}" checkUrl="'descriptorByName/hudson.triggers.TimerTrigger/checkSpec?value=' + encodeURIComponent(this.value)"/>
+        <f:textbox default="${descriptor.cron}" checkUrl="descriptorByName/hudson.triggers.TimerTrigger/checkSpec" checkDependsOn=""/>
     </f:entry>
     <f:entry title="Assignee filter" field="assigneeFilter"
             description="Trigger build only if merge request is assigned to assignee username. No value will always trigger job, regardless of assignee.">
diff --git a/src/main/resources/org/jenkinsci/plugins/gitlab/GitlabBuildTrigger/global.jelly b/src/main/resources/org/jenkinsci/plugins/gitlab/GitlabBuildTrigger/global.jelly
index 04fcac6..5e8e381 100755
--- a/src/main/resources/org/jenkinsci/plugins/gitlab/GitlabBuildTrigger/global.jelly
+++ b/src/main/resources/org/jenkinsci/plugins/gitlab/GitlabBuildTrigger/global.jelly
@@ -14,7 +14,7 @@
       <f:password/>
     </f:entry>
     <f:entry title="${%Crontab line}" field="cron" help="/descriptor/hudson.triggers.TimerTrigger/help/spec">
-      <f:textbox default="H/5 * * * *" checkUrl="'descriptorByName/hudson.triggers.TimerTrigger/checkSpec?value=' + encodeURIComponent(this.value)"/>
+      <f:textbox default="H/5 * * * *" checkUrl="descriptorByName/hudson.triggers.TimerTrigger/checkSpec" checkDependsOn=""/>
     </f:entry>
     <f:entry title="Assignee Filter" field="assigneeFilter"
         description="Trigger build only if merge request is assigned to assignee username. No value will always trigger job, regardless of assignee.">