diff --git a/examples/c/reccalc/reccalc.test b/examples/c/reccalc/reccalc.test
index 5d95b4e0..a4b2591c 100644
--- a/examples/c/reccalc/reccalc.test
+++ b/examples/c/reccalc/reccalc.test
@@ -15,6 +15,8 @@
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
+seq 0 >/dev/null || exit 77
+
 cat >input <<EOF
 1+2*3
 EOF