diff -up sbsigntools-0.9.5/tests/Makefile.am.orig sbsigntools-0.9.5/tests/Makefile.am
--- sbsigntools-0.9.5/tests/Makefile.am.orig	2025-10-03 10:20:11.676718647 +0200
+++ sbsigntools-0.9.5/tests/Makefile.am	2025-10-03 10:20:40.506763759 +0200
@@ -18,7 +18,7 @@ if TEST_BINARY_FORMAT
 EFILDFLAGS = --defsym=EFI_SUBSYSTEM=0x0a
 FORMAT = -O binary
 else
-FORMAT = --target=efi-app-$(EFI_ARCH:x64=x86_64)
+FORMAT = --output-target=efi-app-$(EFI_ARCH:x64=x86_64)
 endif
 check_DATA = $(test_key) $(test_cert)
 check_SCRIPTS = test-wrapper.sh