diff --git a/Mk/bsd.port.mk b/Mk/bsd.port.mk
--- a/Mk/bsd.port.mk
+++ b/Mk/bsd.port.mk
@@ -2045,7 +2045,7 @@
 _MAKE_JOBS_NUMBER:=	${MAKE_JOBS_NUMBER}
 .      else
 .        if !defined(_SMP_CPUS)
-_SMP_CPUS!=		${SYSCTL} -n kern.smp.cpus
+_SMP_CPUS!=		nproc 2>/dev/null || ${SYSCTL} -n kern.smp.cpus
 .        endif
 _EXPORTED_VARS+=	_SMP_CPUS
 _MAKE_JOBS_NUMBER=	${_SMP_CPUS}