diff --git a/libs/libzrtp/projects/gnu/bootstrap.sh b/libs/libzrtp/projects/gnu/bootstrap.sh
index abc867ebf8..df9bb21e30 100755
--- a/libs/libzrtp/projects/gnu/bootstrap.sh
+++ b/libs/libzrtp/projects/gnu/bootstrap.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/bin/sh
 
 reconf () {
   aclocal