diff --git a/testsite/playbooks/roles/wsgihello/files/hello.wsgi b/testsite/playbooks/roles/wsgihello/files/hello.wsgi
index d284cda068c5ba655f6fe0e5886d37765f53907d..9ab419b53ada19b98696b0846fab961bd0f25b93 100644
--- a/testsite/playbooks/roles/wsgihello/files/hello.wsgi
+++ b/testsite/playbooks/roles/wsgihello/files/hello.wsgi
@@ -25,4 +25,4 @@ def application(environ, start_response):
                         ('Content-Length', str(len(output)))]
     start_response(status, response_headers)
 
-    return [output]
+    return [output.encode('utf-8')]