diff --git a/mgmt/config/FileManager.h b/mgmt/config/FileManager.h
index 15ad43b274e..d23c8c9083b 100644
--- a/mgmt/config/FileManager.h
+++ b/mgmt/config/FileManager.h
@@ -158,7 +158,7 @@ class FileManager
   FileManager();
 
   ink_mutex accessLock; // Protects bindings hashtable
-  ConfigUpdateCbTable *_pluginCallbackList;
+  ConfigUpdateCbTable *_pluginCallbackList{nullptr};
 
   std::mutex _callbacksMutex;
   std::mutex _accessMutex;