diff --git a/firefox.spec b/firefox.spec
index 5419e79..6468651 100644
--- a/firefox.spec
+++ b/firefox.spec
@@ -231,7 +231,7 @@ export CXXFLAGS
 %endif
 
 %ifarch %{ix86}
-%define smp_mflags -j1
+%define smp_mflags -j4
 %else
 %define smp_mflags %{_smp_mflags}
 %endif