--- calamares-1.0.1/src/modules/grub/main.py.orig	2015-03-07 13:37:38.315162881 +0100
+++ calamares-1.0.1/src/modules/grub/main.py	2015-03-07 13:39:03.078129593 +0100
@@ -35,8 +35,8 @@
             efi_bootloader_id = distribution.translate(file_name_sanitizer)
         check_chroot_call([libcalamares.job.configuration["grubInstall"], "--target=x86_64-efi", "--efi-directory={!s}".format(efi_directory), "--bootloader-id={!s}".format(efi_bootloader_id)])
         # Workaround for some UEFI firmwares
-        chroot_call(["mkdir", "-p", "{!s}/EFI/boot".format(efi_directory)])
-        chroot_call(["cp", "{!s}/EFI/{!s}/grubx64.efi".format(efi_directory,efi_bootloader_id), "{!s}/EFI/boot/bootx64.efi".format(efi_directory)])
+        check_chroot_call(["mkdir", "-p", "{!s}/EFI/boot".format(efi_directory)])
+        check_chroot_call(["cp", "{!s}/EFI/{!s}/grubx64.efi".format(efi_directory,efi_bootloader_id), "{!s}/EFI/boot/bootx64.efi".format(efi_directory)])
     else:
         install_path = boot_loader["installPath"]
         check_chroot_call([libcalamares.job.configuration["grubInstall"], "--target=i386-pc", install_path])