diff --git a/src/rua/Makefile.am b/src/rua/Makefile.am
index aad5a67..87f1940 100644
--- a/src/rua/Makefile.am
+++ b/src/rua/Makefile.am
@@ -72,11 +72,10 @@
 	RUA_PrivateMessage.h	\
 	RUA_IE.h
 
-AM_CFLAGS = $(ASN1C_CFLAGS) $(OSMOCORE_CFLAGS) -I.
+AM_CFLAGS = $(ASN1C_CFLAGS) $(OSMOCORE_CFLAGS) -I../../include
 
 noinst_LIBRARIES=libosmo-asn1-rua.a
 libosmo_asn1_rua_a_SOURCES=$(ASN_MODULE_SOURCES)
-noinst_HEADERS=$(ASN_MODULE_INC)
 libosmo_asn1_rua_a_LIBADD=$(ASN1C_LDADD)
 
 regen: regenerate-from-asn1-source