diff --git a/ksnakeduel.spec b/ksnakeduel.spec
index ba1872d..e6a1579 100644
--- a/ksnakeduel.spec
+++ b/ksnakeduel.spec
@@ -1,3 +1,5 @@
+%undefine __cmake_in_source_build
+
 Name:    ksnakeduel
 Summary: Snake duel game
 Version: 20.04.3
@@ -55,16 +57,12 @@ that of your opponent.
 
 
 %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