diff --git a/usr.sbin/mergemaster/mergemaster.sh b/usr.sbin/mergemaster/mergemaster.sh
index ace6d6c4a907..367d53840873 100755
--- a/usr.sbin/mergemaster/mergemaster.sh
+++ b/usr.sbin/mergemaster/mergemaster.sh
@@ -238,7 +238,7 @@ case "${RERUN}" in
 
   { cd ${SOURCEDIR} &&
     make DESTDIR=${TEMPROOT} distrib-dirs &&
-    make DESTDIR=${TEMPROOT} distribution;} ||
+    make DESTDIR=${TEMPROOT} -DNO_MAKEDEV distribution;} ||
   { echo '';
     echo "  *** FATAL ERROR: Cannot 'cd' to ${SOURCEDIR} and install files to the";
     echo "      temproot environment";