diff --git a/buildtools/build.sh b/buildtools/build.sh
index c87643a6..4c66a345 100755
--- a/buildtools/build.sh
+++ b/buildtools/build.sh
@@ -5,7 +5,11 @@ set -e
 PROJECT=""
 if [[ -e ext/app ]]; then
   PROJECT="tsconfig-ext.json"
+  echo "Using extra app directory"
+else
+  echo "No extra app directory found"
 fi
+
 WEBPACK_CONFIG=buildtools/webpack.config.js
 if [[ -e ext/buildtools/webpack.config.js ]]; then
   # Allow webpack config file to be replaced (useful