diff --git a/include/osmocom/sgsn/Makefile.am b/include/osmocom/sgsn/Makefile.am
index b4cd5db..b91c9f1 100644
--- a/include/osmocom/sgsn/Makefile.am
+++ b/include/osmocom/sgsn/Makefile.am
@@ -3,6 +3,7 @@
 	crc24.h \
 	debug.h \
 	gb_proxy.h \
+	gprs_gb.h \
 	gprs_gb_parse.h \
 	gprs_gmm.h \
 	gprs_gmm_attach.h \