diff --git a/FirefoxAutoPlaceWindows b/FirefoxAutoPlaceWindows
index 5603d3e..19d2eb6 100644
--- a/FirefoxAutoPlaceWindows
+++ b/FirefoxAutoPlaceWindows
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/bin/sh
 
 set -e