diff --git a/guix-data-service/web/server.scm b/guix-data-service/web/server.scm
index a7419bf..e564a68 100644
--- a/guix-data-service/web/server.scm
+++ b/guix-data-service/web/server.scm
@@ -356,7 +356,7 @@ port. Also, the port used can be changed by passing the --port option.\n"
                                           startup-completed
                                           render-metrics)))))
                          #:unwind? #t))
-                     #:connection-buffer-size (expt 2 16)
+                     #:connection-buffer-size (expt 2 14)
                      #:host host
                      #:port port)))
                 #:unwind? #t)))