diff --git a/Servers/ProtocolServer/Makefile b/Servers/ProtocolServer/Makefile
index 4a8ff50129..7437d33c91 100644
--- a/Servers/ProtocolServer/Makefile
+++ b/Servers/ProtocolServer/Makefile
@@ -10,6 +10,8 @@ PROGRAM = ProtocolServer
 
 LIB_DEPS = Core IPC
 
+EXTRA_CLEAN = ProtocolServerEndpoint.h ProtocolClientEndpoint.h
+
 *.cpp: ProtocolServerEndpoint.h ProtocolClientEndpoint.h
 
 ProtocolServerEndpoint.h: ProtocolServer.ipc | IPCCOMPILER