diff --git a/sysutils/knutclient-kde4/Makefile b/sysutils/knutclient-kde4/Makefile
index 0db07fe1501c..de04b17928d7 100644
--- a/sysutils/knutclient-kde4/Makefile
+++ b/sysutils/knutclient-kde4/Makefile
@@ -15,6 +15,8 @@ MASTER_SITES=	ftp://ftp.buzuluk.cz/pub/alo/knutclient/stable/ \
 MAINTAINER=	rnejdl@ringofsaturn.com
 COMMENT=	A visual client for UPS system NUT
 
+MAKE_JOBS_UNSAFE=	yes
+
 BUILD_DEPENDS=	automake>=0:${PORTSDIR}/devel/automake19
 
 USE_KDELIBS_VER=3
diff --git a/sysutils/knutclient/Makefile b/sysutils/knutclient/Makefile
index 0db07fe1501c..de04b17928d7 100644
--- a/sysutils/knutclient/Makefile
+++ b/sysutils/knutclient/Makefile
@@ -15,6 +15,8 @@ MASTER_SITES=	ftp://ftp.buzuluk.cz/pub/alo/knutclient/stable/ \
 MAINTAINER=	rnejdl@ringofsaturn.com
 COMMENT=	A visual client for UPS system NUT
 
+MAKE_JOBS_UNSAFE=	yes
+
 BUILD_DEPENDS=	automake>=0:${PORTSDIR}/devel/automake19
 
 USE_KDELIBS_VER=3