diff --git a/storm-server/src/main/java/org/apache/storm/daemon/nimbus/Nimbus.java b/storm-server/src/main/java/org/apache/storm/daemon/nimbus/Nimbus.java
index 18c5e5bdf47..36baf6c980e 100644
--- a/storm-server/src/main/java/org/apache/storm/daemon/nimbus/Nimbus.java
+++ b/storm-server/src/main/java/org/apache/storm/daemon/nimbus/Nimbus.java
@@ -4643,6 +4643,9 @@ public SupervisorPageInfo getSupervisorPageInfo(String superId, String host, boo
             } else {
                 supervisorIds = Arrays.asList(superId);
             }
+            if (supervisorIds == null) {
+                supervisorIds = Collections.emptyList();
+            }
             SupervisorPageInfo pageInfo = new SupervisorPageInfo();
             Map<String, Assignment> topoToAssignment = state.assignmentsInfo();
             for (String sid : supervisorIds) {