diff --git a/src/Updux.ts b/src/Updux.ts
index 0ef2c32..207a37d 100644
--- a/src/Updux.ts
+++ b/src/Updux.ts
@@ -33,7 +33,11 @@ export class Updux<
         );
     }
 
-    get reducer() {
-        return (...args) => R.purry((state : DuxAggregateState<TState,TSubduxes>, _action : any) => state, args);
+    get reducer(): ( state: DuxAggregateState<TState,TSubduxes>, action: Action ) => DuxAggregateState<TState,TSubduxes> {
+        return (state,action) => this.upreducer(action)(state);
+    }
+
+    get upreducer(): (action: Action) => (state: DuxAggregateState<TState,TSubduxes>) => DuxAggregateState<TState,TSubduxes>  {
+        return (action) => state => state;
     }
 }
diff --git a/src/reducer.test.ts b/src/reducer.test.ts
index 3babb7d..c668a1e 100644
--- a/src/reducer.test.ts
+++ b/src/reducer.test.ts
@@ -13,7 +13,7 @@ test('basic reducer', () => {
 test('basic upreducer', () => {
     const dux = new Updux({ initial: {a: 3} });
 
-    expect(dux.reducer).toBeTypeOf('function');
+    expect(dux.upreducer).toBeTypeOf('function');
 
-    expect(dux.reducer({ type: 'foo' })({a:1})).toMatchObject({ a: 1 }); // noop
+    expect(dux.upreducer({ type: 'foo' })({a:1})).toMatchObject({ a: 1 }); // noop
 });