diff --git a/nixos/modules/system/boot/stage-1-init.sh b/nixos/modules/system/boot/stage-1-init.sh
index f7c2940049e..8558c7546d7 100644
--- a/nixos/modules/system/boot/stage-1-init.sh
+++ b/nixos/modules/system/boot/stage-1-init.sh
@@ -356,6 +356,7 @@ mountFS() {
     case $options in
         *x-nixos.autoresize*)
             if [ "$fsType" = ext2 -o "$fsType" = ext3 -o "$fsType" = ext4 ]; then
+                modprobe "$fsType"
                 echo "resizing $device..."
                 e2fsck -fp "$device"
                 resize2fs "$device"