diff --git a/usr/lib/dracut/modules.d/40sdmem-security-misc/module-setup.sh b/usr/lib/dracut/modules.d/40sdmem-security-misc/module-setup.sh
index c70ec9a..3d5d0a2 100755
--- a/usr/lib/dracut/modules.d/40sdmem-security-misc/module-setup.sh
+++ b/usr/lib/dracut/modules.d/40sdmem-security-misc/module-setup.sh
@@ -2,18 +2,25 @@
 # -*- mode: shell-script; indent-tabs-mode: nil; sh-basic-offset: 4; -*-
 # ex: ts=8 sw=4 sts=4 et filetype=sh
 
+# called by dracut
 check() {
+    require_binaries dmsetup || return 1
+    require_binaries sdmem || return 1
     return 0
 }
 
+# called by dracut
 depends() {
     return 0
 }
 
+# called by dracut
 install() {
+    inst $(command -v sdmem) /bin/sdmem
     inst_hook shutdown 40 "$moddir/wipe.sh"
 }
 
+# called by dracut
 installkernel() {
     return 0
 }