diff --git a/qemu.sh b/qemu.sh
index a88544e..4c15139 100755
--- a/qemu.sh
+++ b/qemu.sh
@@ -6,7 +6,7 @@ if test "$NOGRAPHIC" = true; then
 fi
 
 fallocate --length 1G tmp.ext4
-mkfs.ext4 tmp.ext4
+mkfs.ext4 -F tmp.ext4
 
 sudo chown root:$(id -u) -R boot/ && sudo chmod g+rw -R boot/
 qemu-system-x86_64 -enable-kvm -m 2048 \