diff --git a/tests/test.sh b/tests/test.sh
index 94fa946..cdf960d 100644
--- a/tests/test.sh
+++ b/tests/test.sh
@@ -42,13 +42,21 @@ if ! [ $OUT = "0d36a423a4e8be813fda4022f08b3844" ] ; then echo "error" ; exit 1
 OUT=$(printf "gemini://perso.pw\r\n" | ../vger -v -d var/gemini/ -l fr | tee /dev/stderr | $MD5)
 if ! [ $OUT = "7db981ce93fee268f29324912800f00d" ] ; then echo "error" ; exit 1 ; fi
 
-type doas 2>/dev/null
-if [ $? -eq 0 ]; then
-    # file from local directory chroot
-    OUT=$(printf "gemini://perso.pw\r\n" | doas ../vger -v -d var/gemini/ -u solene -l fr | tee /dev/stderr | $MD5)
-    if ! [ $OUT = "7db981ce93fee268f29324912800f00d" ] ; then echo "error" ; exit 1 ; fi
+# must fail only on OpenBSD !
+# try to escape from unveil
+if [ -f /bsd ]
+then
+    OUT=$(printf "gemini://fail_on_openbsd/../../test.sh\r\n" | ../vger -d var/gemini/ -l fr | tee /dev/stderr | $MD5)
+    if [ $OUT = "$( ( printf '20 text/gemini; lang=fr\r\n' ; cat $0) | $MD5)" ] ; then echo "error" ; exit 1 ; fi
 fi
 
+#type doas 2>/dev/null
+#if [ $? -eq 0 ]; then
+#    # file from local directory chroot
+#    OUT=$(printf "gemini://perso.pw\r\n" | doas ../vger -v -d var/gemini/ -u solene -l fr | tee /dev/stderr | $MD5)
+#    if ! [ $OUT = "7db981ce93fee268f29324912800f00d" ] ; then echo "error" ; exit 1 ; fi
+#fi
+
 #### no -d parameter from here
 
 if [ -d /var/gemini/ ]