diff --git a/tools/update_dev_dir.sh b/tools/update_dev_dir.sh
index 441898b1f9..9de3f3b38e 100755
--- a/tools/update_dev_dir.sh
+++ b/tools/update_dev_dir.sh
@@ -18,7 +18,7 @@ if [ ! o$REV = $OLD_REV ]; then
     cd /osgeo/openlayers/docs/dev/tools/ 
     python exampleparser.py
     cd /osgeo/openlayers/docs/dev/build
-    ./build.py
+    ./build.py tests.cfg
     
     cp OpenLayers.js ..
     cd ..