diff --git a/system/matrix-synapse.nix b/system/matrix-synapse.nix
index ad7860ec..2487c220 100644
--- a/system/matrix-synapse.nix
+++ b/system/matrix-synapse.nix
@@ -84,6 +84,7 @@ in {
           port = 9148;
           bind_address = "::1";
           resources = [ ];
+          tls = false;
         }
         {
           port = 8008;