diff --git a/packages/toolkit/src/createSlice.ts b/packages/toolkit/src/createSlice.ts
index 0057873f8e..ea680a9e6e 100644
--- a/packages/toolkit/src/createSlice.ts
+++ b/packages/toolkit/src/createSlice.ts
@@ -350,7 +350,7 @@ interface AsyncThunkCreator<
   State,
   CurriedThunkApiConfig extends PreventCircular<AsyncThunkConfig> = PreventCircular<AsyncThunkConfig>
 > {
-  <ThunkArg extends any, Returned = unknown>(
+  <Returned, ThunkArg = void>(
     payloadCreator: AsyncThunkPayloadCreator<
       Returned,
       ThunkArg,
@@ -369,8 +369,8 @@ interface AsyncThunkCreator<
     CurriedThunkApiConfig
   >
   <
-    ThunkArg extends any,
-    Returned = unknown,
+    Returned,
+    ThunkArg,
     ThunkApiConfig extends PreventCircular<AsyncThunkConfig> = {}
   >(
     payloadCreator: AsyncThunkPayloadCreator<
diff --git a/packages/toolkit/src/tests/createSlice.typetest.ts b/packages/toolkit/src/tests/createSlice.typetest.ts
index 40488d7e9d..24c450f6ae 100644
--- a/packages/toolkit/src/tests/createSlice.typetest.ts
+++ b/packages/toolkit/src/tests/createSlice.typetest.ts
@@ -666,8 +666,8 @@ const value = actionCreators.anyKey
           }
         ),
         testExplicitType: create.asyncThunk<
-          TestArg,
           TestReturned,
+          TestArg,
           {
             rejectValue: TestReject
           }