diff --git a/test/luks.test b/test/luks.test
index 9be10df..37b1db7 100755
--- a/test/luks.test
+++ b/test/luks.test
@@ -10,7 +10,7 @@ cleanup()
     rm -rf "$tmpdir"
 }
 
-command -v cryptsetup > /dev/null && grep -q dm_crypt /proc/modules || exit 222
+command -v cryptsetup > /dev/null || exit 222
 
 set -ef
 trap cleanup EXIT INT
diff --git a/test/lvm.test b/test/lvm.test
index 973fa85..a02563c 100755
--- a/test/lvm.test
+++ b/test/lvm.test
@@ -10,7 +10,7 @@ cleanup()
     rm -rf "$tmpdir"
 }
 
-command -v lvm > /dev/null && grep -q dm_mod /proc/modules || exit 222
+command -v lvm > /dev/null || exit 222
 
 set -ef
 trap cleanup EXIT INT
diff --git a/test/zfs.test b/test/zfs.test
index 75b3bcb..1b7565e 100755
--- a/test/zfs.test
+++ b/test/zfs.test
@@ -9,7 +9,7 @@ cleanup()
     rm -rf "$tmpdir"
 }
 
-command -v zfs > /dev/null && grep -q zfs /proc/modules || exit 222
+command -v zfs > /dev/null || exit 222
 
 set -ef
 trap cleanup EXIT INT