diff --git a/openbsc/src/Makefile.am b/openbsc/src/Makefile.am
index 11b9824..2c92a86 100644
--- a/openbsc/src/Makefile.am
+++ b/openbsc/src/Makefile.am
@@ -3,7 +3,7 @@
 AM_LDFLAGS = $(LIBOSMOCORE_LIBS)
 
 # build current directory before building gprs
-SUBDIRS = . ipaccess gprs
+SUBDIRS = . ipaccess gprs nat
 
 sbin_PROGRAMS = bsc_hack bs11_config isdnsync bsc_mgcp
 noinst_LIBRARIES = libbsc.a libmsc.a libvty.a libsccp.a libmgcp.a