diff --git a/openbsc/tests/Makefile.am b/openbsc/tests/Makefile.am
index 7bb8712..273c84f 100644
--- a/openbsc/tests/Makefile.am
+++ b/openbsc/tests/Makefile.am
@@ -12,6 +12,10 @@
 SUBDIRS += smpp
 endif
 
+if HAVE_LIBGTP
+SUBDIRS += sgsn
+endif
+
 
 # The `:;' works around a Bash 3.2 bug when the output is not writeable.
 $(srcdir)/package.m4: $(top_srcdir)/configure.ac