diff --git a/core/net/src/main/java/org/onosproject/net/host/impl/HostProbingManager.java b/core/net/src/main/java/org/onosproject/net/host/impl/HostProbingManager.java
index ea3a8a1..64f2791 100644
--- a/core/net/src/main/java/org/onosproject/net/host/impl/HostProbingManager.java
+++ b/core/net/src/main/java/org/onosproject/net/host/impl/HostProbingManager.java
@@ -52,7 +52,12 @@
     private static final String SCHEME = "hostprobing";
 
     private HostProbingStoreDelegate delegate = event -> {
-        getProvider(SCHEME).processEvent(event);
+        HostProbingProvider hostProbingProvider = getProvider(SCHEME);
+        if (hostProbingProvider != null) {
+            hostProbingProvider.processEvent(event);
+        } else {
+            log.warn("Unable to find host probing provider. Cannot handle event {}", event);
+        }
     };
 
     @Activate