diff --git a/barbican/api/middleware/context.py b/barbican/api/middleware/context.py
index 522b8d6f5..c30429c3c 100644
--- a/barbican/api/middleware/context.py
+++ b/barbican/api/middleware/context.py
@@ -30,7 +30,7 @@ class BaseContextMiddleware(mw.Middleware):
         if not request_id:
             request_id = 'req-' + utils.generate_uuid()
         setattr(req, 'request_id', request_id)
-        LOG.info('Begin processing request %(request_id)',
+        LOG.info('Begin processing request %(request_id)s',
                  {'request_id': request_id})
 
     def process_response(self, resp):