diff --git a/tests-ng/corner-case.sh b/tests-ng/corner-case.sh
index bea39c1..9c4b037 100755
--- a/tests-ng/corner-case.sh
+++ b/tests-ng/corner-case.sh
@@ -89,7 +89,7 @@ cd ${ddpath} | ${bin} install -D -c ${cfg} -p p1 --verbose f_x
 [ "$?" != "0" ] && exit 1
 
 echo "[+] test install not existing src"
-cd ${ddpath} | ${bin} install -c ${cfg} --dry -p p1 --verbose f_y
+cd ${ddpath} | ${bin} install -c ${cfg} -f --dry -p p1 --verbose f_y
 
 echo "[+] test install to temp"
 cd ${ddpath} | ${bin} install -t -c ${cfg} -p p1 --verbose f_x