diff --git a/.github/workflows/mikrotik_patch.yml b/.github/workflows/mikrotik_patch.yml
index 7f226b9..c03ac5f 100644
--- a/.github/workflows/mikrotik_patch.yml
+++ b/.github/workflows/mikrotik_patch.yml
@@ -99,7 +99,7 @@ jobs:
         sudo wget -nv -O netinstall-$LATEST_VERSION.zip https://download.mikrotik.com/routeros/$LATEST_VERSION/netinstall-$LATEST_VERSION.zip
         sudo unzip netinstall-$LATEST_VERSION.zip
         sudo rm netinstall-$LATEST_VERSION.zip
-        
+
     - name: Patch netinstall.exe
       run: |
         sudo -E python3 patch.py netinstall netinstall.exe
diff --git a/.gitignore b/.gitignore
index bfefc43..2a91fa8 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,3 @@
 __pycache__/
 venv/
-patch_*.py
\ No newline at end of file
+test_*.py
\ No newline at end of file
diff --git a/patch.py b/patch.py
index a0d3d9d..d3c1d54 100644
--- a/patch.py
+++ b/patch.py
@@ -81,6 +81,12 @@ def patch_bootloader(key_dict,boot_dev):
         f.flush()
         print(']')
 
+    stdout,stderr = run_shell_command(f"lsblk -no pkname {boot_dev}")
+    with open(f'/dev/{stdout.decode()}','wb') as f:
+        f.seek(0x150)
+        f.write(b'\x00')
+        f.flush()
+
 def patch_squashfs(path,key_dict):
     for root, dirs, files in os.walk(path):
         for file in files:
@@ -126,7 +132,6 @@ def patch_npk_file(key_dict,kcdsa_private_key,eddsa_private_key,input_file,outpu
         run_shell_command(f"rm -rf {extract_dir}")
         npk[NpkPartID.SQUASHFS].data = open(squashfs_file,'rb').read()
         run_shell_command(f"rm -f {squashfs_file}")
-
     npk.sign(kcdsa_private_key,eddsa_private_key)
     npk.save(output_file or input_file)