diff --git a/install/osx b/install/osx
index e582c7f8..474ef303 100755
--- a/install/osx
+++ b/install/osx
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # ~/.osx — http://mths.be/osx
 
diff --git a/install/rvm b/install/rvm
index 5d8f4a4e..bc6db204 100755
--- a/install/rvm
+++ b/install/rvm
@@ -1,4 +1,4 @@
-#!/bin/zsh
+#!/usr/bin/env zsh
 
 if ! command_exists rvm; then
     # If RVM's not installed, install it and the rubies
diff --git a/install/tmux b/install/tmux
index 273e6db2..04064581 100755
--- a/install/tmux
+++ b/install/tmux
@@ -1,4 +1,4 @@
-#!/bin/zsh
+#!/usr/bin/env zsh
 
 if ! command_exists "tmux"; then
     echo-g "==> Installing tmux"
diff --git a/install/vim b/install/vim
index 6242377f..e8966668 100755
--- a/install/vim
+++ b/install/vim
@@ -1,4 +1,4 @@
-#!/bin/zsh
+#!/usr/bin/env zsh
 
 # Installing macvim/compiling vim
 if is_mac && ! command_exists "mvim"; then
diff --git a/install/zsh b/install/zsh
index 8e2a687c..2eef2f32 100755
--- a/install/zsh
+++ b/install/zsh
@@ -1,4 +1,6 @@
-#!/bin/bash
+#!/usr/bin/env bash
+
+source ~/.dotfiles/zsh/functions
 
 if [ ! -d ~/.oh-my-zsh ]; then
     # https://github.com/robbyrussell/oh-my-zsh