diff --git a/src/main/scala/gitbucket/core/servlet/GitAuthenticationFilter.scala b/src/main/scala/gitbucket/core/servlet/GitAuthenticationFilter.scala
index e299d4e..16a83a5 100644
--- a/src/main/scala/gitbucket/core/servlet/GitAuthenticationFilter.scala
+++ b/src/main/scala/gitbucket/core/servlet/GitAuthenticationFilter.scala
@@ -139,7 +139,7 @@
       case _ =>
         () =>
           {
-            logger.debug(s"Not enough path arguments: ${request.paths}")
+            logger.debug(s"Not enough path arguments: ${request.paths.mkString(", ")}")
             response.sendError(HttpServletResponse.SC_NOT_FOUND)
           }
     }