diff --git a/builder/core/bootloaders.py b/builder/core/bootloaders.py
index 849f21ea..acbaa93b 100644
--- a/builder/core/bootloaders.py
+++ b/builder/core/bootloaders.py
@@ -258,7 +258,7 @@ def create_grub_efi_boot(architecture, paths, grub_cfg_template_dir, memtest_wan
             f.write(grub_pep_cfg_content)
         logger.info(f"  grub_pep.cfg generated at: {grub_pep_cfg_path}")
 
-        def build_grub_image(architecture, grub_arch, efi_arch):
+        def build_grub_image(architecture, grub_arch, efi_arch, grub_platform):
             """Internal function to build the GRUB EFI image for an architecture."""
             logger.info(f"Building GRUB EFI image for architecture: {architecture}")
             logger.info(f" => Building GRUB EFI image for GRUB arch: {grub_arch}, EFI: {efi_arch}...")
@@ -271,7 +271,6 @@ def create_grub_efi_boot(architecture, paths, grub_cfg_template_dir, memtest_wan
                 "--",
                  f"--directory=/usr/lib/grub/{grub_platform}",
                  f"--format={grub_platform}",
-                 f"--format={grub_platform}",
                  f"--output={efi_file_tmp_path}",
                  f"boot/grub/grub.cfg"
            ]