diff --git a/src/Handler.php b/src/Handler.php
index d69af830744cc63593bee23918b9fce9b0092b6b..e1d670c3e6437b020b41d76efc92afc2f8dc5e05 100644
--- a/src/Handler.php
+++ b/src/Handler.php
@@ -226,7 +226,7 @@ class Handler extends BaseHandler {
           'projectrootdb' => $root . '/db',
           'projectrootfiles' => $root . '/files',
           'projectrootredis' => $root . '/redis',
-          'projectname' => getenv('PROJECT_NAME') . '-' . getenv('CI_COMMIT_REF_SLUG'),
+          'projectname' => getenv('PROJECT_NAME') . '_' . getenv('CI_COMMIT_REF_SLUG'),
           'projectdomain' => $config->readValue('domain'),
           'projectprotocol' => 'https',
           'projectport' => '',