diff --git a/tests/Makefile.am b/tests/Makefile.am
index f2dc77d3b..78744bf2c 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -57,7 +57,7 @@ rigctlsync_CFLAGS = $(AM_CFLAGS) $(PTHREAD_CFLAGS) -I$(top_builddir)/security
 if HAVE_LIBUSB
     rigtestlibusb_CFLAGS = $(AM_CFLAGS) $(PTHREAD_CFLAGS) $(LIBUSB_CFLAGS)
 endif
-#testsecurity_CFLAGS = $(AM_CFLAGS) $(PTHREAD_CFLAGS) -I$(top_builddir)/src -I$(top_builddir)/security
+testsecurity_CFLAGS = $(AM_CFLAGS) $(PTHREAD_CFLAGS) -I$(top_srcdir)/security
 
 rigctl_LDADD = $(PTHREAD_LIBS) $(READLINE_LIBS) $(LDADD)
 rigctld_LDADD = $(NET_LIBS) $(PTHREAD_LIBS) $(LDADD) $(READLINE_LIBS)