diff --git a/openbsc/src/libbsc/Makefile.am b/openbsc/src/libbsc/Makefile.am
index 7cb1e6e..21cbccd 100644
--- a/openbsc/src/libbsc/Makefile.am
+++ b/openbsc/src/libbsc/Makefile.am
@@ -22,5 +22,6 @@
 			e1_config.c \
 			bsc_api.c bsc_msc.c bsc_vty.c \
 			gsm_04_08_utils.c \
-			bsc_init.c bts_init.c bsc_rf_ctrl.c
+			bsc_init.c bts_init.c bsc_rf_ctrl.c \
+			arfcn_range_encode.c