diff --git a/Makefile b/Makefile
index 92ac48c4..c7557823 100644
--- a/Makefile
+++ b/Makefile
@@ -1,4 +1,4 @@
-localversion = $(shell bash scripts/localversion.sh)
+localversion = $(shell sh scripts/localversion.sh)
 
 cflags = -Wall -Iinclude -Iinclude/asm/gameboy -DLOCALVERSION=\"$(localversion)\" -g -std=c99 -D_POSIX_C_SOURCE=200112L
 
diff --git a/scripts/localversion.sh b/scripts/localversion.sh
index 576305ea..b159259a 100644
--- a/scripts/localversion.sh
+++ b/scripts/localversion.sh
@@ -1,4 +1,4 @@
-#! /bin/bash
+#!/bin/sh
 
 #
 # Use git to figure out which version we are using.