diff --git a/monitor/fan.cpp b/monitor/fan.cpp
index 9856242..ba67918 100644
--- a/monitor/fan.cpp
+++ b/monitor/fan.cpp
@@ -432,9 +432,9 @@
             util::getObjMap<bool>(_name, util::OPERATIONAL_STATUS_INTF,
                                   util::FUNCTIONAL_PROPERTY, functional);
 
-        auto response = util::SDBusPlus::lookupAndCallMethod(
-            _bus, util::INVENTORY_PATH, util::INVENTORY_INTF, "Notify",
-            objectMap);
+        auto response = util::SDBusPlus::callMethod(
+            _bus, util::INVENTORY_SVC, util::INVENTORY_PATH,
+            util::INVENTORY_INTF, "Notify", objectMap);
 
         if (response.is_method_error())
         {
diff --git a/monitor/tach_sensor.cpp b/monitor/tach_sensor.cpp
index 13bf1be..029220a 100644
--- a/monitor/tach_sensor.cpp
+++ b/monitor/tach_sensor.cpp
@@ -376,8 +376,11 @@
     auto objectMap =
         util::getObjMap<bool>(_invName, util::OPERATIONAL_STATUS_INTF,
                               util::FUNCTIONAL_PROPERTY, functional);
-    auto response = util::SDBusPlus::lookupAndCallMethod(
-        _bus, util::INVENTORY_PATH, util::INVENTORY_INTF, "Notify", objectMap);
+
+    auto response = util::SDBusPlus::callMethod(
+        _bus, util::INVENTORY_SVC, util::INVENTORY_PATH, util::INVENTORY_INTF,
+        "Notify", objectMap);
+
     if (response.is_method_error())
     {
         log<level::ERR>("Error in notify update of tach sensor inventory");