diff --git a/application/run-tests.sh b/application/run-tests.sh
index e0f923e8..5f98166b 100755
--- a/application/run-tests.sh
+++ b/application/run-tests.sh
@@ -1,7 +1,11 @@
 #!/usr/bin/env bash
 
+# break on first error
 set -e
 
+# print script lines to stdout
+set -x
+
 # Install composer dev dependencies
 cd /data
 composer install --prefer-dist --no-interaction --optimize-autoloader --no-progress