diff --git a/server/core/dcb.cc b/server/core/dcb.cc
index 3f24522bc..db968f372 100644
--- a/server/core/dcb.cc
+++ b/server/core/dcb.cc
@@ -3492,11 +3492,6 @@ int poll_add_dcb(DCB *dcb)
     else if (dcb->dcb_role == DCB_ROLE_BACKEND_HANDLER)
     {
         worker_id = dcb->session->client_dcb->poll.thread.id;
-
-        fprintf(stderr, "%i, %i\n",
-                worker_id,
-                Worker::get_current_id());
-
         ss_dassert(worker_id == Worker::get_current_id());
     }
     else
diff --git a/server/modules/routing/binlogrouter/blr.c b/server/modules/routing/binlogrouter/blr.c
index 4dcbe6b22..f421f644f 100644
--- a/server/modules/routing/binlogrouter/blr.c
+++ b/server/modules/routing/binlogrouter/blr.c
@@ -1790,10 +1790,6 @@ errorReply(MXS_ROUTER *instance,
            mxs_error_action_t action,
            bool *succp)
 {
-    fprintf(stderr, "errorReply %i, %i\n",
-            backend_dcb->poll.thread.id,
-            mxs_worker_get_current_id());
-
     ss_dassert(backend_dcb->dcb_role == DCB_ROLE_BACKEND_HANDLER);
     ROUTER_INSTANCE *router = (ROUTER_INSTANCE *)instance;
     int error;