diff --git a/SPECS/kmod-wireguard.spec b/SPECS/kmod-wireguard.spec
index 7a29947..f32b7d4 100644
--- a/SPECS/kmod-wireguard.spec
+++ b/SPECS/kmod-wireguard.spec
@@ -1,16 +1,6 @@
 %global pkg wireguard
 
-%global kernel_version_min 4.18.0-305.el8
-
-# To pick a specific kernel use `--define "kernel_version 4.18.0-315.el8"`
-# Otherwise the latest installed kernel-devel version later than
-# %%{kernel_version_min} will be used.
-
-%global kernel_version_latest %({ echo %{kernel_version_min}; rpm --query kernel-devel --queryformat '%%{VERSION}-%%{RELEASE}\\\n' | grep -v "package kernel-devel is not installed"; } | sort -V | sed -e '0,/^%{kernel_version_min}$/d' | tail -n 1)
-
-%if "%{kernel_version_latest}" != ""
-%{!?kernel_version:%{expand:%%global kernel_version %{kernel_version_latest}}}
-%endif
+%global kernel_version 4.18.0-305.12.1.el8_4
 
 %global _use_internal_dependency_generator 0
 %global __find_requires %{nil}
@@ -46,11 +36,6 @@ BuildRequires:    make
 BuildRequires:    redhat-rpm-config
 BuildRequires:    xz
 
-%{!?kernel_version:
-BuildRequires:    kernel-devel >= %{kernel_version_min}
-}
-
-%{?kernel_version:
 BuildRequires:    kernel-devel = %{kernel_version}
 BuildRequires:    kernel-devel-uname-r = %{kernel_version}.%{_arch}
 
@@ -61,7 +46,6 @@ Requires:         kernel-modules-uname-r = %{kernel_version}.%{_arch}
 
 Provides:         installonlypkg(kernel-module)
 Provides:         %{name}-%{kernel_version}.%{_arch} = %{?epoch:%{epoch}:}%{version}-%{release}
-}
 
 Requires(post):   /usr/sbin/depmod
 Requires(postun): /usr/sbin/depmod