diff --git a/tests/minixfs_test.in b/tests/minixfs_test.in
index 8075ba890..1784b1261 100644
--- a/tests/minixfs_test.in
+++ b/tests/minixfs_test.in
@@ -16,10 +16,20 @@ if ! which mkfs.minix >/dev/null 2>&1; then
 fi
 
 if ! mkfs.minix -h | grep -- -v > /dev/null; then
+    echo "mkfs.minix doesn't support minix2fs; cannot test minix*fs."
+   exit 77
+fi
+
+if ! mkfs.minix -h | grep -- -3 > /dev/null; then
     echo "mkfs.minix doesn't support minix3fs; cannot test minix*fs."
    exit 77
 fi
 
+if ! mkfs.minix -h | grep -- -B > /dev/null; then
+    echo "mkfs.minix doesn't support variable block size; cannot test minix*fs."
+   exit 77
+fi
+
 "@builddir@/grub-fs-tester" minix
 "@builddir@/grub-fs-tester" minix2
 "@builddir@/grub-fs-tester" minix3