diff --git a/openbsc/include/osmocom/gprs/Makefile.am b/openbsc/include/osmocom/gprs/Makefile.am
index fe5714e..66b414f 100644
--- a/openbsc/include/osmocom/gprs/Makefile.am
+++ b/openbsc/include/osmocom/gprs/Makefile.am
@@ -1,3 +1,3 @@
-libgb_HEADERS = gprs_bssgp.h gprs_ns.h gprs_ns_frgre.h
+libgb_HEADERS = gprs_bssgp.h gprs_ns.h gprs_ns_frgre.h gprs_msgb.h
 
 libgbdir = $(includedir)/osmocom/gprs