diff --git a/ksshaskpass.spec b/ksshaskpass.spec
index 0d88578..adc1e6c 100644
--- a/ksshaskpass.spec
+++ b/ksshaskpass.spec
@@ -1,3 +1,5 @@
+%undefine __cmake_in_source_build
+
 Name:    ksshaskpass
 Version: 5.19.3
 Release: 1%{?dist}
@@ -33,16 +35,12 @@ BuildRequires:  pkgconfig(Qt5Core)
 
 
 %build
-mkdir %{_target_platform}
-pushd %{_target_platform}
-%{cmake_kf5} ..
-popd
-
-make %{?_smp_mflags} -C %{_target_platform}
+%{cmake_kf5}
+%cmake_build
 
 
 %install
-make install/fast DESTDIR=%{buildroot} -C %{_target_platform}
+%cmake_install
 
 %find_lang ksshaskpass