diff --git a/bashrc b/bashrc
index 62bed253..4d5a82d4 100644
--- a/bashrc
+++ b/bashrc
@@ -267,7 +267,7 @@ export LSCOLORS=gxBxhxDxfxhxhxhxhxcxcx
 if [[ $UNAME != Darwin ]]; then
     export NPROC=`nproc`
 else
-    export NPROC=`sysctl -n hw.cpu`
+    export NPROC=`sysctl -n hw.ncpu`
 fi
 
 export MAKEFLAGS="-j$NPROC"
diff --git a/zshrc b/zshrc
index 46e781a7..7d5e65c8 100644
--- a/zshrc
+++ b/zshrc
@@ -205,7 +205,7 @@ export LSCOLORS=gxBxhxDxfxhxhxhxhxcxcx
 if [[ $UNAME != Darwin ]]; then
     export NPROC=`nproc`
 else
-    export NPROC=`sysctl -n hw.cpu`
+    export NPROC=`sysctl -n hw.ncpu`
 fi
 
 export MAKEFLAGS="-j$NPROC"