diff --git a/include/Makefile.am b/include/Makefile.am
index ea38eec..61e6cf5 100644
--- a/include/Makefile.am
+++ b/include/Makefile.am
@@ -1,3 +1,6 @@
 noinst_HEADERS=mISDNif.h internal.h
 
-SUBDIRS=osmocom
+nobase_include_HEADERS = osmocom/abis/ipa.h osmocom/abis/trau_frame.h	\
+ osmocom/abis/ipa_proxy.h osmocom/abis/ipaccess.h osmocom/abis/abis.h	\
+ osmocom/abis/subchan_demux.h osmocom/abis/e1_input.h			\
+ osmocom/abis/lapd.h osmocom/trau/osmo_ortp.h