diff --git a/openbsc/tests/channel/Makefile.am b/openbsc/tests/channel/Makefile.am
index 8e57b8d..7729659 100644
--- a/openbsc/tests/channel/Makefile.am
+++ b/openbsc/tests/channel/Makefile.am
@@ -1,5 +1,5 @@
 INCLUDES = $(all_includes) -I$(top_srcdir)/include
-AM_CFLAGS=-Wall -ggdb3
+AM_CFLAGS=-Wall -ggdb3 $(LIBOSMOCORE_CFLAGS)
 
 noinst_PROGRAMS = channel_test