diff --git a/lfs/mISDN b/lfs/mISDN
index a6dd75372..01bd77d7d 100644
--- a/lfs/mISDN
+++ b/lfs/mISDN
@@ -77,6 +77,7 @@ $(TARGET) : $(patsubst %,$(DIR_DL)/%,$(objects))
 	@$(PREBUILD)
 	@rm -rf $(DIR_SRC)/mISDN* && cd $(DIR_SRC) && tar zxf $(DIR_DL)/$(DL_FILE)
 	cd $(DIR_SRC)/mISDN && patch -Np1 < $(DIR_SRC)/src/patches/mISDN-hfcusb-reportl1down.patch
+	cd $(DIR_SRC)/mISDN && patch -Np1 < $(DIR_SRC)/src/patches/mISDN_hfc-s_add_id.patch
 	cd $(DIR_SRC)/mISDN && ./configure --with-kerneldir=/usr/src/linux
 	cd $(DIR_SRC)/mISDN && make KVERS=$(KVER)-$(VERSUFIX) modules
 	cd $(DIR_SRC)/mISDN && make KVERS=$(KVER)-$(VERSUFIX) \