diff --git a/iptables.spec b/iptables.spec
index c279f7c..cfc4d01 100644
--- a/iptables.spec
+++ b/iptables.spec
@@ -151,7 +151,7 @@ rm -f extensions/libipt_unclean.man
 # includedir is overriden on purpose to detect projects that
 # fail to include libxtables_CFLAGS
 %configure --includedir="%_includedir/%name" --enable-libipq
-%make_build V=1
+make %{?_smp_mflags} V=1
 
 %install
 %make_install