diff --git a/platform.in b/platform.in
index bb35a2673..1f9cae667 100644
--- a/platform.in
+++ b/platform.in
@@ -315,7 +315,7 @@
 @alt@
 @alt@%__nprocs	%(N=`nproc`; [ "$N" -gt 0 ] 2>/dev/null && echo "$N" || echo 1)
 @alt@%_smp_mflags	-j${NPROCS:-%__nprocs}
-@alt@%make_build	%_make_bin %_smp_mflags
+@alt@%make_build	%_make_bin -O %_smp_mflags
 @alt@
 @alt@%make_install	%_make_bin INSTALL="%__install -p"
 @alt@%makeinstall_std	%make_install %{?_makeinstall_target:%{_makeinstall_target}} DESTDIR=%buildroot