diff --git a/build_tools/mkpkgconfig b/build_tools/mkpkgconfig
index ceea7ebc01..919c6e816f 100755
--- a/build_tools/mkpkgconfig
+++ b/build_tools/mkpkgconfig
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/bin/sh
 PPATH=$1
 ## Make sure we were called from Makefile