diff --git a/libresapi/src/webui-src/make-src/build.sh b/libresapi/src/webui-src/make-src/build.sh
index 9bd6dda4a..f96674cae 100755
--- a/libresapi/src/webui-src/make-src/build.sh
+++ b/libresapi/src/webui-src/make-src/build.sh
@@ -1,8 +1,8 @@
-#!/usr/bin/sh
+#!/usr/bin/env sh
 
 # create webfiles from sources at compile time (works without npm/node.js)
 
-if [ "$1" == "" ];then
+if [ "$1" = "" ];then
 	publicdest=../../webui
 	src=..
 else