Index: databases/tdb/Makefile
===================================================================
--- databases/tdb/Makefile	(revision 376473)
+++ databases/tdb/Makefile	(working copy)
@@ -74,6 +74,9 @@
 .if !defined(DISABLE_MAKE_JOBS) && !defined(MAKE_JOBS_UNSAFE)
 CONFIGURE_ARGS+=	--jobs=${MAKE_JOBS_NUMBER}
 _MAKE_JOBS+=		--jobs=${MAKE_JOBS_NUMBER}
+.else
+CONFIGURE_ARGS+=	--jobs=1
+_MAKE_JOBS+=		--jobs=1
 .endif
 
 TDB_MAN8=		man/man8/tdbbackup.8.gz \
Index: devel/talloc/Makefile
===================================================================
--- devel/talloc/Makefile	(revision 376473)
+++ devel/talloc/Makefile	(working copy)
@@ -71,6 +71,9 @@
 .if !defined(DISABLE_MAKE_JOBS) && !defined(MAKE_JOBS_UNSAFE)
 CONFIGURE_ARGS+=	--jobs=${MAKE_JOBS_NUMBER}
 _MAKE_JOBS+=		--jobs=${MAKE_JOBS_NUMBER}
+.else
+CONFIGURE_ARGS+=	--jobs=1
+_MAKE_JOBS+=		--jobs=1
 .endif
 
 TALLOC_MAN3=		man/man3/talloc.3.gz