diff --git a/mbox-importer.spec b/mbox-importer.spec
index 087dc0f..6cbfef7 100644
--- a/mbox-importer.spec
+++ b/mbox-importer.spec
@@ -71,7 +71,7 @@ pushd %{_target_platform}
   -DBUILD_TESTING:BOOL=%{?tests:ON}%{!?tests:OFF}
 popd
 
-make %{?_smp_mflags} -C %{_target_platform}
+%make_build -C %{_target_platform}
 
 
 %install