diff --git a/server/modules/routing/binlogrouter/blr_slave.c b/server/modules/routing/binlogrouter/blr_slave.c
index 676026b0f..15f8b1d5c 100644
--- a/server/modules/routing/binlogrouter/blr_slave.c
+++ b/server/modules/routing/binlogrouter/blr_slave.c
@@ -494,6 +494,8 @@ blr_slave_request(ROUTER_INSTANCE *router, ROUTER_SLAVE *slave, GWBUF *queue)
                   MYSQL_COMMAND(queue));
         break;
     }
+
+    gwbuf_free(queue);
     return rv;
 }