diff --git a/src/kits/app/Roster.cpp b/src/kits/app/Roster.cpp
index 457b40b683..e158e810dc 100644
--- a/src/kits/app/Roster.cpp
+++ b/src/kits/app/Roster.cpp
@@ -1081,6 +1081,16 @@ BRoster::Launch(const entry_ref *ref, int argc, const char * const *args,
 	return _LaunchApp(NULL, ref, NULL, argc, args, appTeam);
 }
 
+// TODO: just here for providing binary compatibility
+// (for example "Guido" needs this)
+extern "C"
+status_t
+Launch__C7BRosterP9entry_refP8BMessagePl(BRoster *roster,
+										 entry_ref* ref,
+										 BMessage* initialMessage)
+{
+	return roster->BRoster::Launch(ref, initialMessage, NULL);
+}
 
 //	#pragma mark - Recent document and app support
 
diff --git a/src/kits/storage/NodeInfo.cpp b/src/kits/storage/NodeInfo.cpp
index 396c43a764..9c2f3a2071 100644
--- a/src/kits/storage/NodeInfo.cpp
+++ b/src/kits/storage/NodeInfo.cpp
@@ -760,6 +760,18 @@ BNodeInfo::GetTrackerIcon(const entry_ref *ref, BBitmap *icon, icon_size iconSiz
 	return error;
 }
 
+// TODO: just here for providing binary compatibility
+// (for example "Guido" needs this)
+extern "C"
+status_t
+GetTrackerIcon__9BNodeInfoP9entry_refP7BBitmap9icon_size(
+	BNodeInfo *nodeInfo, entry_ref* ref,
+	BBitmap* bitmap, icon_size iconSize)
+{
+	// NOTE: nodeInfo is ignored - maybe that's wrong!
+	return BNodeInfo::GetTrackerIcon(ref, bitmap, iconSize);
+}
+
 void 
 BNodeInfo::_ReservedNodeInfo1()
 {