diff --git a/modules/server/containers/defs/etherpad.nix b/modules/server/containers/defs/etherpad.nix
index 19b7f4f..d3086ee 100644
--- a/modules/server/containers/defs/etherpad.nix
+++ b/modules/server/containers/defs/etherpad.nix
@@ -54,7 +54,7 @@ let
     requireAuthentication = "\${REQUIRE_AUTHENTICATION:true}";
     requireAuthorization = "\${REQUIRE_AUTHORIZATION:false}";
     trustProxy = "\${TRUST_PROXY:false}";
-    socketTransportProtocols = ["websocket", "polling"];
+    socketTransportProtocols = ["websocket" "polling"];
     socketIo.maxHttpBufferSize = "\${SOCKETIO_MAX_HTTP_BUFFER_SIZE:1000000}";