diff --git a/src/python/app.py b/src/python/app.py
index 9a636a32..1db25f6d 100644
--- a/src/python/app.py
+++ b/src/python/app.py
@@ -44,12 +44,11 @@ class App:
 
 
     def call_backend_coro(self,
-                          name:   str,
-                          uuid:   str,
-                          args:   Optional[List[str]]      = None,
-                          kwargs: Optional[Dict[str, Any]] = None) -> None:
+                          name: str,
+                          uuid: str,
+                          args: Optional[List[str]] = None) -> None:
         self._call_coro(
-            getattr(self.backend, name)(*args or [], **kwargs or {}), uuid
+            getattr(self.backend, name)(*args or []), uuid
         )
 
 
@@ -57,11 +56,10 @@ class App:
                          account_id: str,
                          name:       str,
                          uuid:       str,
-                         args:       Optional[List[str]]      = None,
-                         kwargs:     Optional[Dict[str, Any]] = None) -> None:
+                         args:       Optional[List[str]] = None) -> None:
         client = self.backend.clients[account_id]
         self._call_coro(
-            getattr(client, name)(*args or [], **kwargs or {}), uuid
+            getattr(client, name)(*args or []), uuid
         )
 
 
diff --git a/src/qml/Chat/Banners/InviteBanner.qml b/src/qml/Chat/Banners/InviteBanner.qml
index dbb4d069..9ed219ea 100644
--- a/src/qml/Chat/Banners/InviteBanner.qml
+++ b/src/qml/Chat/Banners/InviteBanner.qml
@@ -35,17 +35,17 @@ Banner {
         "accept": function(button) {
             button.loading = true
             py.callClientCoro(
-                chatPage.userId, "join", [chatPage.roomId], {},
-                function() { button.loading = false }
-            )
+                chatPage.userId, "join", [chatPage.roomId], function() {
+                    button.loading = false
+            })
         },
 
         "decline": function(button) {
             button.loading = true
             py.callClientCoro(
-                chatPage.userId, "room_leave", [chatPage.roomId], {},
-                function() { button.loading = false }
-            )
+                chatPage.userId, "room_leave", [chatPage.roomId], function() {
+                    button.loading = false
+            })
         }
     }
 }
diff --git a/src/qml/Chat/Banners/LeftBanner.qml b/src/qml/Chat/Banners/LeftBanner.qml
index d0303e19..583e6cbf 100644
--- a/src/qml/Chat/Banners/LeftBanner.qml
+++ b/src/qml/Chat/Banners/LeftBanner.qml
@@ -24,9 +24,9 @@ Banner {
         "forget": function(button) {
             button.loading = true
             py.callClientCoro(
-                chatPage.userId, "room_forget", [chatPage.roomId], {},
-                function() { button.loading = false }
-            )
+                chatPage.userId, "room_forget", [chatPage.roomId], function() {
+                    button.loading = false
+            })
         }
     }
 }
diff --git a/src/qml/Chat/Timeline/EventList.qml b/src/qml/Chat/Timeline/EventList.qml
index f54c0978..1c907289 100644
--- a/src/qml/Chat/Timeline/EventList.qml
+++ b/src/qml/Chat/Timeline/EventList.qml
@@ -50,7 +50,6 @@ HRectangle {
                     chatPage.userId,
                     "load_past_events",
                     [chatPage.roomId],
-                    {},
                     function(more_to_load) { canLoad = more_to_load }
                 )
             }
diff --git a/src/qml/Pages/SignIn.qml b/src/qml/Pages/SignIn.qml
index 2a9e2347..0482b456 100644
--- a/src/qml/Pages/SignIn.qml
+++ b/src/qml/Pages/SignIn.qml
@@ -26,7 +26,7 @@ Item {
                 button.loading = true
                 var args = [idField.text, passwordField.text]
 
-                py.callCoro("login_client", args, {}, function(user_id) {
+                py.callCoro("login_client", args, function(user_id) {
                     pageStack.showPage(
                         "RememberAccount",
                         {"loginWith": loginWith, "userId": user_id}
diff --git a/src/qml/Python.qml b/src/qml/Python.qml
index c6174baa..8cec4366 100644
--- a/src/qml/Python.qml
+++ b/src/qml/Python.qml
@@ -16,18 +16,18 @@ Python {
         return call_sync("APP.backend." + name, args)
     }
 
-    function callCoro(name, args, kwargs, callback) {
+    function callCoro(name, args, callback) {
         var uuid = Math.random() + "." + name
 
         pendingCoroutines[uuid] = callback || function() {}
-        call("APP.call_backend_coro", [name, uuid, args, kwargs])
+        call("APP.call_backend_coro", [name, uuid, args])
     }
 
-    function callClientCoro(account_id, name, args, kwargs, callback) {
+    function callClientCoro(account_id, name, args, callback) {
         var uuid = Math.random() + "." + name
 
         pendingCoroutines[uuid] = callback || function() {}
-        call("APP.call_client_coro", [account_id, name, uuid, args, kwargs])
+        call("APP.call_client_coro", [account_id, name, uuid, args])
     }
 
     Component.onCompleted: {
@@ -43,13 +43,13 @@ Python {
             call("APP.is_debug_on", [Qt.application.arguments], function(on) {
                 window.debug = on
 
-                callCoro("has_saved_accounts", [], {}, function(has) {
+                callCoro("has_saved_accounts", [], function(has) {
                     py.ready = true
                     willLoadAccounts(has)
 
                     if (has) {
                         py.loadingAccounts = true
-                        py.callCoro("load_saved_accounts", [], {}, function() {
+                        py.callCoro("load_saved_accounts", [], function() {
                             py.loadingAccounts = false
                         })
                     }