diff --git a/app-devel/xa/autobuild/defines b/app-devel/xa/autobuild/defines
index b33b52bd5fee..c01b69c9ca25 100644
--- a/app-devel/xa/autobuild/defines
+++ b/app-devel/xa/autobuild/defines
@@ -4,3 +4,4 @@ PKGDEP="glibc"
 PKGDES="Cross-assembler for 6502 microprocessor"
 
 MAKE_AFTER="BINDIR=$PKGDIR/usr/bin MANDIR=$PKGDIR/usr/share/man"
+NOPARALLEL=1