diff --git a/indra/newview/llinventorymodel.cpp b/indra/newview/llinventorymodel.cpp
index 53835f0166ebed6a4cb51644243d84661d3f8527..b1975c726193752354e3c2da0bb20cb5af6b8661 100644
--- a/indra/newview/llinventorymodel.cpp
+++ b/indra/newview/llinventorymodel.cpp
@@ -1059,12 +1059,11 @@ void LLInventoryModel::idleNotifyObservers()
 	{
 		return;
 	}
-	notifyObservers("");
+	notifyObservers();
 }
 
 // Call this method when it's time to update everyone on a new state.
-// The optional argument 'service_name' is used by Agent Inventory Service [DEV-20328]
-void LLInventoryModel::notifyObservers(const std::string service_name)
+void LLInventoryModel::notifyObservers()
 {
 	if (mIsNotifyObservers)
 	{
@@ -1081,15 +1080,7 @@ void LLInventoryModel::notifyObservers(const std::string service_name)
 	{
 		LLInventoryObserver* observer = *iter;
 		
-		if (service_name.empty())
-		{
-			observer->changed(mModifyMask);
-		}
-		else
-		{
-			observer->mMessageName = service_name;
-			observer->changed(mModifyMask);
-		}
+		observer->changed(mModifyMask);
 
 		// safe way to increment since changed may delete entries! (@!##%@!@&*!)
 		iter = mObservers.upper_bound(observer); 
@@ -1187,7 +1178,7 @@ void  LLInventoryModel::fetchInventoryResponder::result(const LLSD& content)
 	{
 		changes |= gInventory.updateItem(*it);
 	}
-	gInventory.notifyObservers("fetchinventory");
+	gInventory.notifyObservers();
 	gViewerWindow->getWindow()->decBusyCount();
 }
 
@@ -1196,7 +1187,7 @@ void LLInventoryModel::fetchInventoryResponder::error(U32 status, const std::str
 {
 	llinfos << "fetchInventory::error "
 		<< status << ": " << reason << llendl;
-	gInventory.notifyObservers("fetchinventory");
+	gInventory.notifyObservers();
 }
 
 bool LLInventoryModel::fetchDescendentsOf(const LLUUID& folder_id) const
diff --git a/indra/newview/llinventorymodel.h b/indra/newview/llinventorymodel.h
index f6728fd5758f812730837d3c9e06f8693d1ae7db..15da09990ff67c26206aa4b0dbd59dc4cd972702 100644
--- a/indra/newview/llinventorymodel.h
+++ b/indra/newview/llinventorymodel.h
@@ -425,9 +425,8 @@ class LLInventoryModel
 	// has been indicated.
 	void idleNotifyObservers();
 
-	// Call to explicitly update everyone on a new state.  The optional argument
-	// 'service_name' is used by Agent Inventory Service [DEV-20328]
-	void notifyObservers(const std::string service_name="");
+	// Call to explicitly update everyone on a new state.
+	void notifyObservers();
 
 	// Allows outsiders to tell the inventory if something has
 	// been changed 'under the hood', but outside the control of the
diff --git a/indra/newview/llinventorymodelbackgroundfetch.cpp b/indra/newview/llinventorymodelbackgroundfetch.cpp
index e31360fcbca48616d75e4bb91eac9975d21df48e..7b1ff102e704ce89afb7cabd15f25e338cdfecb2 100644
--- a/indra/newview/llinventorymodelbackgroundfetch.cpp
+++ b/indra/newview/llinventorymodelbackgroundfetch.cpp
@@ -388,7 +388,7 @@ void LLInventoryModelFetchDescendentsResponder::result(const LLSD& content)
                         titem->setParent(lost_uuid);
                         titem->updateParentOnServer(FALSE);
                         gInventory.updateItem(titem);
-                        gInventory.notifyObservers("fetchDescendents");
+                        gInventory.notifyObservers();
                         
                     }
                 }
@@ -464,7 +464,7 @@ void LLInventoryModelFetchDescendentsResponder::result(const LLSD& content)
 		fetcher->setAllFoldersFetched();
 	}
 	
-	gInventory.notifyObservers("fetchDescendents");
+	gInventory.notifyObservers();
 }
 
 // If we get back an error (not found, etc...), handle it here.
@@ -496,7 +496,7 @@ void LLInventoryModelFetchDescendentsResponder::error(U32 status, const std::str
 			fetcher->setAllFoldersFetched();
 		}
 	}
-	gInventory.notifyObservers("fetchDescendents");
+	gInventory.notifyObservers();
 }
 
 BOOL LLInventoryModelFetchDescendentsResponder::getIsRecursive(const LLUUID& cat_id) const
diff --git a/indra/newview/llinventoryobserver.cpp b/indra/newview/llinventoryobserver.cpp
index 0fd4b2bee54fabc12bba9eb36cbe57899bb4e835..6bf19e346db340cc7adfee84908fd92f99e124b0 100644
--- a/indra/newview/llinventoryobserver.cpp
+++ b/indra/newview/llinventoryobserver.cpp
@@ -572,16 +572,7 @@ void LLInventoryAddedObserver::changed(U32 mask)
 	// the network, figure out which item was updated.
 	LLMessageSystem* msg = gMessageSystem;
 
-	std::string msg_name;
-	if (mMessageName.empty())
-	{
-		msg_name = msg->getMessageName();
-	}
-	else
-	{
-		msg_name = mMessageName;
-	}
-
+	std::string msg_name = msg->getMessageName();
 	if (msg_name.empty())
 	{
 		return;
diff --git a/indra/newview/llinventoryobserver.h b/indra/newview/llinventoryobserver.h
index f2a2049a51f7e86cb95f062d74a8dbd26699a2fc..2d9021961e2e72497a333f904f181af8af281f98 100644
--- a/indra/newview/llinventoryobserver.h
+++ b/indra/newview/llinventoryobserver.h
@@ -63,7 +63,6 @@ class LLInventoryObserver
 	LLInventoryObserver();
 	virtual ~LLInventoryObserver();
 	virtual void changed(U32 mask) = 0;
-	std::string mMessageName; // used by Agent Inventory Service only. [DEV-20328]
 };
 
 //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~