diff --git a/kernel_module/character_device_create.c b/kernel_module/character_device_create.c
index d4ea30d..7fc25ee 100644
--- a/kernel_module/character_device_create.c
+++ b/kernel_module/character_device_create.c
@@ -1,6 +1,8 @@
 /*
 Automatically create the device under /dev on insmod, and remove on rmmod.
 
+TODO: by itself works, but if I try to cat character_device.ko after removing this, that OOPS!
+
 https://stackoverflow.com/questions/5970595/create-a-device-node-in-code/
 https://stackoverflow.com/questions/5970595/how-to-create-a-device-node-from-the-init-module-code-of-a-linux-kernel-module/18594761#18594761
 */
@@ -39,7 +41,8 @@ static const struct file_operations fops = {
 static int myinit(void)
 {
     /* cat /proc/devices */
-    alloc_chrdev_region(&major, 0, 1, NAME "_proc");
+    if (alloc_chrdev_region(&major, 0, 1, NAME "_proc")) {
+    };
     /* ls /sys/class */
     myclass = class_create(THIS_MODULE, NAME "_sys");
     /* ls /dev/ */
diff --git a/rootfs_overlay/mknoddev.sh b/rootfs_overlay/mknoddev.sh
index 87a7848..5537bb7 100755
--- a/rootfs_overlay/mknoddev.sh
+++ b/rootfs_overlay/mknoddev.sh
@@ -1,4 +1,4 @@
 #!/bin/sh
 dev="$1"
-major="$(grep "$dev" /proc/devices | cut -d ' ' -f 1)"
+major="$(awk -F ' ' '$2 == "'"$dev"'" { print $1 }' /proc/devices)"
 mknod "/dev/$dev" c "$major" 0