diff --git a/kwindowsystem.spec b/kwindowsystem.spec
index 06ac05a..ee97de8 100644
--- a/kwindowsystem.spec
+++ b/kwindowsystem.spec
@@ -19,11 +19,15 @@
 %bcond_without lang
 %define lname   libKF5WindowSystem5
 %define _tar_path 5.38
+# Full KF5 version (e.g. 5.33.0)
+%{!?_kf5_version: %global _kf5_version %{version}}
+# Last major and minor KF5 version (e.g. 5.33)
+%{!?_kf5_bugfix_version: %global _kf5_bugfix_version %(echo %{_kf5_version} | awk -F. '{print $1"."$2}')}
 Name:           kwindowsystem
 Version:        5.38.0
 Release:        0
 BuildRequires:  cmake >= 3.0
-BuildRequires:  extra-cmake-modules >= %{_tar_path}
+BuildRequires:  extra-cmake-modules >= %{_kf5_bugfix_version}
 BuildRequires:  fdupes
 BuildRequires:  kf5-filesystem
 %if %{with lang}