diff --git a/backend/scripts/build.copy.files.sh b/backend/scripts/build.copy.files.sh
index 773177ec4..85022ba9b 100755
--- a/backend/scripts/build.copy.files.sh
+++ b/backend/scripts/build.copy.files.sh
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/bin/sh
 
 # html files
 mkdir -p build/middleware/helpers/email/templates/