diff --git a/core/src/main/java/hudson/triggers/SCMTrigger.java b/core/src/main/java/hudson/triggers/SCMTrigger.java
index 7288e5d92dd8037b75978f21b4f411ae345f1bdc..f08e566ad7c94d53112e9021b117ef5e20867809 100644
--- a/core/src/main/java/hudson/triggers/SCMTrigger.java
+++ b/core/src/main/java/hudson/triggers/SCMTrigger.java
@@ -253,10 +253,10 @@ public class SCMTrigger extends Trigger<SCMedItem> {
             return true;
         }
 
-        public FormValidation doCheckPoll_scm_threads(@QueryParameter String poll_scm_threads) {
-            if (poll_scm_threads != null && "".equals(poll_scm_threads.trim()))
+        public FormValidation doCheckPoll_scm_threads(@QueryParameter String value) {
+            if (value != null && "".equals(value.trim()))
                 return FormValidation.ok();
-            return FormValidation.validateNonNegativeInteger(poll_scm_threads);
+            return FormValidation.validateNonNegativeInteger(value);
         }
     }
 
diff --git a/core/src/main/resources/hudson/triggers/SCMTrigger/global.jelly b/core/src/main/resources/hudson/triggers/SCMTrigger/global.jelly
index 0b3f0a23ec02a2743ac70e23d5b34b11fbd5fa88..b4ed788741a68160daffe7f4fe1982445cb74a14 100644
--- a/core/src/main/resources/hudson/triggers/SCMTrigger/global.jelly
+++ b/core/src/main/resources/hudson/triggers/SCMTrigger/global.jelly
@@ -31,9 +31,8 @@ THE SOFTWARE.
     <f:section title="${%SCM Polling}">
       <f:entry title="${%Max # of concurrent polling}"
                help="/help/triggers/SCMTrigger/concurrency.html">
-        <f:textbox
-         field="poll_scm_threads"
-         value="${descriptor.pollingThreadCount==0 ? '' : descriptor.pollingThreadCount}"/>
+        <f:textbox name="poll_scm_threads"
+          value="${descriptor.pollingThreadCount==0 ? '' : descriptor.pollingThreadCount}"/>
       </f:entry>
     </f:section>
   </j:if>