diff --git a/shim.spec b/shim.spec
index 2f18d99d92228146949c64507e08b255e2cb396d..cb5398deb5ac8baf38b2ebe41601133a3b78b797 100644
--- a/shim.spec
+++ b/shim.spec
@@ -15,14 +15,14 @@
 %global _binaries_in_noarch_packages_terminate_build 0
 %undefine _debuginfo_subpackages
 
-%global efidir %(eval echo $(grep ^ID= /etc/os-release | sed -e 's/^ID=//' ))
+%global efidir %{_vendor}
 %global shimdir %{_datadir}/shim/%{version}-%{release}/%{efi_arch}
 %global shimefivendor /boot/efi/EFI/%{efi_vendor}/
 %global shimBOOT  /boot/efi/EFI/BOOT/
 
 Name:		shim
 Version:	15
-Release:        20
+Release:        21
 Summary:	First-stage UEFI bootloader
 ExclusiveArch:  x86_64 aarch64
 License:	BSD
@@ -131,6 +131,9 @@ cd ..
 /usr/src/debug/%{name}-%{version}-%{release}/*
 
 %changelog
+* Wed Mar 17 2021 yangzhuangzhuang <yangzhuangzhuang1@huawei.com> - 15-21
+- modify efider to _vendor
+
 * Tue Feb 9 2021 Steven Y.Gui <steven_ygui@163.com> - 15-20
 - backport some upstream patches