diff --git a/GNUmakefile b/GNUmakefile
index 0370eba54ae..4f76cb3565d 100644
--- a/GNUmakefile
+++ b/GNUmakefile
@@ -77,7 +77,7 @@ ifeq ($(OS), Linux)
 	NPROCS:=$(shell nproc)
 endif
 ifeq ($(OS), Darwin)
-	NPROCS:=$(shell sysctl -a | grep "hw.ncpu" | cut -d" " -f2)
+	NPROCS:=$(shell sysctl -a | grep "hw.ncpu" | cut -d" " -f3)
 endif
 ifeq ($(OS), FreeBSD)
 	NPROCS:=$(shell sysctl -a | grep "hw.ncpu" | cut -d" " -f2 )