diff -ur dracut-047.orig/modules.d/99fs-lib/module-setup.sh dracut-047/modules.d/99fs-lib/module-setup.sh
--- dracut-047.orig/modules.d/99fs-lib/module-setup.sh	2018-02-19 09:00:33.000000000 +0000
+++ dracut-047/modules.d/99fs-lib/module-setup.sh	2018-05-18 19:33:05.169511667 +0000
@@ -41,7 +41,7 @@
 include_fs_helper_modules() {
     local dev=$1 fs=$2
     case "$fs" in
-        xfs|btrfs)
+        xfs|btrfs|ext4)
             instmods crc32c
             ;;
         f2fs)