diff --git a/src/PSUSensorMain.cpp b/src/PSUSensorMain.cpp
index d66e5be..400c514 100644
--- a/src/PSUSensorMain.cpp
+++ b/src/PSUSensorMain.cpp
@@ -149,6 +149,7 @@
 
     // TODO may need only modify the ones that need to be changed.
     sensors.clear();
+    combineEvents.clear();
     for (const char* type : sensorTypes)
     {
         if (!getSensorConfiguration(type, dbusConnection, sensorConfigs,
@@ -433,6 +434,7 @@
         }
 
         // OperationalStatus event
+        combineEvents[*psuName + "OperationalStatus"] = nullptr;
         combineEvents[*psuName + "OperationalStatus"] =
             std::make_unique<PSUCombineEvent>(
                 objectServer, io, *psuName, eventPathList, "OperationalStatus");