diff --git a/kpatch-build/kpatch-build b/kpatch-build/kpatch-build
index 80ff4c0..54ca39c 100755
--- a/kpatch-build/kpatch-build
+++ b/kpatch-build/kpatch-build
@@ -40,7 +40,7 @@ BASE="$PWD"
 LOGFILE="/tmp/kpatch-build-$(date +%s).log"
 SCRIPTDIR="$(readlink -f $(dirname $(type -p $0)))"
 ARCHVERSION="$(uname -r)"
-CPUS="$(grep -c ^processor /proc/cpuinfo)"
+CPUS="$(getconf _NPROCESSORS_ONLN)"
 CACHEDIR="$HOME/.kpatch"
 SRCDIR="$CACHEDIR/src"
 OBJDIR="$CACHEDIR/obj"