diff --git a/dns/bind9/Makefile b/dns/bind9/Makefile
index 58f67dc29c60..d67286735b06 100644
--- a/dns/bind9/Makefile
+++ b/dns/bind9/Makefile
@@ -27,6 +27,8 @@ COMMENT=	Completely new version of the BIND DNS suite with updated DNSSEC
 # ISC releases things like 9.3.0rc1, which our versioning doesn't like
 ISCVERSION=	9.3.6-P1
 
+MAKE_JOBS_SAFE=	yes
+
 GNU_CONFIGURE=	yes
 CONFIGURE_ARGS=	--localstatedir=/var --disable-linux-caps \
 		--with-randomdev=/dev/random
diff --git a/dns/bind94/Makefile b/dns/bind94/Makefile
index a93a528bd277..6b38c0f8920a 100644
--- a/dns/bind94/Makefile
+++ b/dns/bind94/Makefile
@@ -27,6 +27,8 @@ COMMENT=	The BIND DNS suite with updated DNSSEC and threads
 # ISC releases things like 9.4.0b3, which our versioning doesn't like
 ISCVERSION=	9.4.3-P2
 
+MAKE_JOBS_SAFE=	yes
+
 GNU_CONFIGURE=	yes
 CONFIGURE_ARGS=	--localstatedir=/var --disable-linux-caps \
 		--with-randomdev=/dev/random
diff --git a/dns/bind95/Makefile b/dns/bind95/Makefile
index 61666440156f..a97476ca0e81 100644
--- a/dns/bind95/Makefile
+++ b/dns/bind95/Makefile
@@ -27,6 +27,8 @@ COMMENT=	The BIND DNS suite with updated DNSSEC and threads
 # ISC releases things like 9.4.0b3, which our versioning doesn't like
 ISCVERSION=	9.5.1-P2
 
+MAKE_JOBS_SAFE=	yes
+
 GNU_CONFIGURE=	yes
 CONFIGURE_ARGS=	--localstatedir=/var --disable-linux-caps \
 		--with-randomdev=/dev/random
diff --git a/dns/bind96/Makefile b/dns/bind96/Makefile
index a3411a65fe07..9c5aa6eeca41 100644
--- a/dns/bind96/Makefile
+++ b/dns/bind96/Makefile
@@ -27,6 +27,8 @@ COMMENT=	The BIND DNS suite with updated DNSSEC and threads
 # ISC releases things like 9.4.0b3, which our versioning doesn't like
 ISCVERSION=	9.6.0-P1
 
+MAKE_JOBS_SAFE=	yes
+
 GNU_CONFIGURE=	yes
 CONFIGURE_ARGS=	--localstatedir=/var --disable-linux-caps \
 		--with-randomdev=/dev/random
diff --git a/dns/p5-Net-DNS/Makefile b/dns/p5-Net-DNS/Makefile
index 08f3ae482d71..3fccbb0a7399 100644
--- a/dns/p5-Net-DNS/Makefile
+++ b/dns/p5-Net-DNS/Makefile
@@ -18,6 +18,8 @@ COMMENT=	Perl5 interface to the DNS resolver, and dynamic updates
 RUN_DEPENDS=	ipcount:${PORTSDIR}/net-mgmt/p5-Net-IP \
 		${SITE_PERL}/Digest/HMAC_MD5.pm:${PORTSDIR}/security/p5-Digest-HMAC
 
+MAKE_JOBS_SAFE=	yes
+
 PERL_CONFIGURE=	yes
 CONFIGURE_ARGS+=	--no-online-tests --no-IPv6-tests
 
diff --git a/mail/alpine/Makefile b/mail/alpine/Makefile
index eee2b3b5d1b9..712024095b17 100644
--- a/mail/alpine/Makefile
+++ b/mail/alpine/Makefile
@@ -33,6 +33,8 @@ OPTIONS+=	PICO "Build and install pico, the default editor" on \
 
 USE_BZIP2=	yes
 
+MAKE_JOBS_UNSAFE=	yes
+
 GNU_CONFIGURE=	yes
 
 .if !defined(PICO_ALPINE_SLAVE)
diff --git a/security/libotr/Makefile b/security/libotr/Makefile
index 345ed68cfa6a..bae1ed521c15 100644
--- a/security/libotr/Makefile
+++ b/security/libotr/Makefile
@@ -21,6 +21,8 @@ COMMENT=	The portable OTR Messaging Library and toolkit
 LIB_DEPENDS=	gpg-error.0:${PORTSDIR}/security/libgpg-error \
 		gcrypt:${PORTSDIR}/security/libgcrypt
 
+MAKE_JOBS_SAFE=	yes
+
 USE_GNOME=	pkgconfig
 USE_AUTOTOOLS=	autoconf:262 libtool:15
 USE_LDCONFIG=	yes
diff --git a/security/pidgin-otr/Makefile b/security/pidgin-otr/Makefile
index 258862d98034..3fc53f16d9cd 100644
--- a/security/pidgin-otr/Makefile
+++ b/security/pidgin-otr/Makefile
@@ -25,6 +25,8 @@ LIB_DEPENDS=	otr:${PORTSDIR}/security/libotr \
 		gcrypt:${PORTSDIR}/security/libgcrypt \
 		purple:${PORTSDIR}/net-im/libpurple
 
+MAKE_JOBS_SAFE=	yes
+
 USE_GMAKE=	yes
 USE_GNOME=	intltool
 USE_GETTEXT=	yes
diff --git a/textproc/htdig/Makefile b/textproc/htdig/Makefile
index af7feb508ff8..6dac4a860fa3 100644
--- a/textproc/htdig/Makefile
+++ b/textproc/htdig/Makefile
@@ -20,6 +20,8 @@ DISTNAME=	htdig-3.2.0b6
 MAINTAINER=	DougB@FreeBSD.org
 COMMENT=	A www indexing and searching system
 
+MAKE_JOBS_SAFE=	yes
+
 GNU_CONFIGURE=	yes
 CONFIGURE_ARGS=	--with-config-dir=${PREFIX}/etc/htdig \
 		--with-default-config-file=${PREFIX}/etc/htdig/htdig.conf \
diff --git a/x11-wm/windowmaker/Makefile b/x11-wm/windowmaker/Makefile
index 5635efbabd11..628cacb1637f 100644
--- a/x11-wm/windowmaker/Makefile
+++ b/x11-wm/windowmaker/Makefile
@@ -23,6 +23,8 @@ LIB_DEPENDS=	ungif.5:${PORTSDIR}/graphics/libungif \
 		Xft.2:${PORTSDIR}/x11-fonts/libXft
 RUN_DEPENDS=	${LOCALBASE}/share/WindowMaker/Themes/LeetWM.themed/style:${PORTSDIR}/graphics/wmicons
 
+MAKE_JOBS_SAFE=	yes
+
 USE_AUTOTOOLS=	libtool:15
 USE_BZIP2=	yes
 USE_GNOME=	gnomehack gnometarget pkgconfig
diff --git a/x11/electricsheep/Makefile b/x11/electricsheep/Makefile
index 12094b4d6f24..78d6d3c351e9 100644
--- a/x11/electricsheep/Makefile
+++ b/x11/electricsheep/Makefile
@@ -22,6 +22,8 @@ RUN_DEPENDS=	xloadimage:${PORTSDIR}/x11/xloadimage \
 		xsetbg:${PORTSDIR}/x11/xloadimage \
 		curl:${PORTSDIR}/ftp/curl
 
+MAKE_JOBS_SAFE=	yes
+
 USE_SDL=	sdl
 GNU_CONFIGURE=	yes
 USE_XORG=	x11 xau xdmcp xext xi xrandr xv sm ice
diff --git a/x11/xscreensaver/Makefile b/x11/xscreensaver/Makefile
index 0182002a69fc..018d7e524cb7 100644
--- a/x11/xscreensaver/Makefile
+++ b/x11/xscreensaver/Makefile
@@ -19,6 +19,8 @@ LIB_DEPENDS=	gle.4:${PORTSDIR}/graphics/gle \
 		xml2.5:${PORTSDIR}/textproc/libxml2 \
 		glade-2.0.0:${PORTSDIR}/devel/libglade2
 
+MAKE_JOBS_SAFE=	yes
+
 USE_XORG=	xpm
 USE_GL=		yes
 USE_GMAKE=	yes