diff --git a/headers/os/app/Messenger.h b/headers/os/app/Messenger.h
index 1285014d82..3adec7d598 100644
--- a/headers/os/app/Messenger.h
+++ b/headers/os/app/Messenger.h
@@ -57,6 +57,8 @@ public:
 	bool IsValid() const;
 	team_id Team() const;
 
+	uint32 HashValue() const;
+
 	//----- Private or reserved -----------------------------------------
 
 	class Private;
diff --git a/src/kits/app/Messenger.cpp b/src/kits/app/Messenger.cpp
index 3e284a3743..11975b85ce 100644
--- a/src/kits/app/Messenger.cpp
+++ b/src/kits/app/Messenger.cpp
@@ -504,6 +504,13 @@ BMessenger::Team() const
 }
 
 
+uint32
+BMessenger::HashValue() const
+{
+	return fPort * 19 + fHandlerToken;
+}
+
+
 //	#pragma mark - Private or reserved