diff --git a/drydocker/roundcubemail/test_unit.sh b/drydocker/roundcubemail/test_unit.sh
index f5ec01d..dfd4536 100755
--- a/drydocker/roundcubemail/test_unit.sh
+++ b/drydocker/roundcubemail/test_unit.sh
@@ -1,20 +1,27 @@
 #!/bin/bash
 
 pushd /srv/${PACKAGE}.git
 pushd tests
 
 set -x
-phpunit --debug ; retval=$?
+
+/usr/bin/php \
+    -d display_errors=On \
+    -d error_reporting=On \
+    /usr/bin/phpunit --debug
+
+retval=$?
+
 set - -x
 
 if [ ${retval} -ne 0 ]; then
     echo "FAILED unit tests. Return code $?"
     if [ -f "/srv/${PACKAGE}.git/logs/errors" ]; then
         cat /srv/${PACKAGE}.git/logs/errors
     fi
 
     exit 1
 fi
 
 popd
 popd