diff --git a/xsimd.spec b/xsimd.spec
index 2f1e805..3e47590 100644
--- a/xsimd.spec
+++ b/xsimd.spec
@@ -1,5 +1,3 @@
-%undefine __cmake_in_source_build
-
 Name:           xsimd
 Version:        7.4.6
 Release:        1%{?dist}
@@ -21,6 +19,9 @@ BuildRequires:  gtest-devel
 # there is no actual arched content - this is a header only library
 %global debug_package %{nil}
 
+# Get Fedora 33++ behavior on anything older
+%undefine __cmake_in_source_build
+
 %global _description \
 SIMD (Single Instruction, Multiple Data) is a feature of microprocessors that \
 has been available for many years. SIMD instructions perform a single operation \
@@ -55,7 +56,7 @@ Provides:       %{name}-static = %{version}-%{release}
 %check
 # Explicitly not supported upstream for simd mode. Still valuable for scalar mode layer.
 %ifnarch ppc64le s390x
-%make_build -C %{_vpath_builddir} xtest
+%cmake_build -- xtest
 %endif
 
 %files devel