diff --git a/kmag.spec b/kmag.spec
index 56f7dce..2a91a0d 100644
--- a/kmag.spec
+++ b/kmag.spec
@@ -1,3 +1,5 @@
+%undefine __cmake_in_source_build
+
 Name:    kmag
 Version: 20.04.3
 Release: 1%{?dist}
@@ -44,16 +46,12 @@ Conflicts: kdeaccessibility < 1:4.7.80
 
 
 %build
-mkdir %{_target_platform}
-pushd %{_target_platform}
-%{cmake_kf5} ..
-popd
-
-%make_build -C %{_target_platform}
+%{cmake_kf5}
+%cmake_build
 
 
 %install
-make install/fast DESTDIR=%{buildroot} -C %{_target_platform}
+%cmake_install
 
 %find_lang %{name} --all-name --with-html --with-man