diff --git a/python-uranium.spec b/python-uranium.spec
index f51d097..3d272fe 100644
--- a/python-uranium.spec
+++ b/python-uranium.spec
@@ -25,6 +25,9 @@ BuildRequires:  python3-twisted
 
 BuildArch:      noarch
 
+# Get Fedora 33++ behavior on anything older
+%undefine __cmake_in_source_build
+
 %description
 Uranium is a Python framework for building 3D printing related applications.
 
@@ -57,9 +60,9 @@ related applications.
 %build
 # there is no arch specific content, so we set LIB_SUFFIX to nothing
 # see https://github.com/Ultimaker/Uranium/commit/862a246bdfd7e25541b04a35406957612c6f4bb7
-%{cmake} -DLIB_SUFFIX:STR= .
-make %{?_smp_mflags}
-make doc
+%cmake -DLIB_SUFFIX:STR= .
+%cmake_build
+%cmake_build -- doc
 
 %check
 %{__python3} -m pip freeze
@@ -71,7 +74,7 @@ make doc
 
 
 %install
-make install DESTDIR=%{buildroot}
+%cmake_install
 
 # Move the cmake files
 mv %{buildroot}%{_datadir}/cmake* %{buildroot}%{_datadir}/cmake