diff --git a/src/libmsc/Makefile.am b/src/libmsc/Makefile.am
index a2560ea..90bbbf8 100644
--- a/src/libmsc/Makefile.am
+++ b/src/libmsc/Makefile.am
@@ -15,6 +15,7 @@
 	$(LIBOSMOSIGTRAN_CFLAGS) \
 	$(LIBOSMOSCCP_CFLAGS) \
 	$(LIBOSMOMGCPCLIENT_CFLAGS) \
+	$(LIBOSMOGSUPCLIENT_CFLAGS) \
 	$(LIBOSMORANAP_CFLAGS) \
 	$(NULL)