diff --git a/openbis/dist/server/startup.sh b/openbis/dist/server/startup.sh
index febbe2c7627bad35a04c8a62588d064668eb861b..e5c9ac6ccb9cbf6b041fd9ee5e746e3edabe808a 100755
--- a/openbis/dist/server/startup.sh
+++ b/openbis/dist/server/startup.sh
@@ -3,5 +3,6 @@
 source `dirname "$0"`/setup-env
 $JVM -DSTOP.PORT=$JETTY_STOP_PORT \
      -DSTOP.KEY=$JETTY_STOP_KEY \
+     -Dorg.eclipse.jetty.util.log.DEBUG=true \
      $JAVA_OPTS $JAVA_MEM_OPTS \
      -jar start.jar etc/jetty.xml >> logs/jetty.out 2>&1 &