diff --git a/src/main/java/hudson/plugins/throttleconcurrents/ThrottleJobProperty.java b/src/main/java/hudson/plugins/throttleconcurrents/ThrottleJobProperty.java
index ff97d6d9..cb9b976f 100644
--- a/src/main/java/hudson/plugins/throttleconcurrents/ThrottleJobProperty.java
+++ b/src/main/java/hudson/plugins/throttleconcurrents/ThrottleJobProperty.java
@@ -30,6 +30,8 @@
 
 import net.sf.json.JSONObject;
 
+import org.apache.commons.lang.ArrayUtils;
+import org.apache.commons.lang.StringUtils;
 import org.kohsuke.stapler.DataBoundConstructor;
 import org.kohsuke.stapler.QueryParameter;
 import org.kohsuke.stapler.StaplerRequest;
@@ -78,7 +80,7 @@ public ThrottleJobProperty(Integer maxConcurrentPerNode,
         this.paramsToUseForLimit = paramsToUseForLimit;
         if ((this.paramsToUseForLimit != null)) {
             if ((this.paramsToUseForLimit.length() > 0)) {
-                this.paramsToCompare = Arrays.asList(this.paramsToUseForLimit.split(","));
+                this.paramsToCompare = Arrays.asList(ArrayUtils.nullToEmpty(StringUtils.split(this.paramsToUseForLimit)));
             }
             else {
                 this.paramsToCompare = new ArrayList<String>();
diff --git a/src/main/java/hudson/plugins/throttleconcurrents/ThrottleQueueTaskDispatcher.java b/src/main/java/hudson/plugins/throttleconcurrents/ThrottleQueueTaskDispatcher.java
index 15a88eea..33c28a14 100644
--- a/src/main/java/hudson/plugins/throttleconcurrents/ThrottleQueueTaskDispatcher.java
+++ b/src/main/java/hudson/plugins/throttleconcurrents/ThrottleQueueTaskDispatcher.java
@@ -218,7 +218,7 @@ private boolean isAnotherBuildWithSameParametersRunningOnNode(Node node, Queue.I
                     if (exec.getCurrentExecutable() != null &&
                             exec.getCurrentExecutable().getParent() != null &&
                             exec.getCurrentExecutable().getParent().getOwnerTask() != null &&
-                            exec.getCurrentExecutable().getParent().getOwnerTask().getName().equals(item.task.getDisplayName())) {
+                            exec.getCurrentExecutable().getParent().getOwnerTask().getName().equals(item.task.getName())) {
                         List<ParameterValue> executingUnitParams = getParametersFromWorkUnit(exec.getCurrentWorkUnit());
                         executingUnitParams = doFilterParams(paramsToCompare, executingUnitParams);