diff --git a/core/src/main/java/com/m3u/core/util/coroutine/Flows.kt b/core/src/main/java/com/m3u/core/util/coroutine/Flows.kt
index 2203fd5bc..8139602e6 100644
--- a/core/src/main/java/com/m3u/core/util/coroutine/Flows.kt
+++ b/core/src/main/java/com/m3u/core/util/coroutine/Flows.kt
@@ -19,8 +19,8 @@ fun <T> Flow<T>.timeout(duration: Duration, block: FlowCollector<T>.() -> Unit)
     }
 
 fun <R> flatmapCombined(
-    flows: Iterable<Flow<Any>>,
-    transform: (keys: Array<Any>) -> Flow<R>
+    flows: Iterable<Flow<Any?>>,
+    transform: (keys: Array<Any?>) -> Flow<R>
 ): Flow<R> = combine(flows) { it }.flatMapLatest { keys -> transform(keys) }
 
 @Suppress("UNCHECKED_CAST")
@@ -28,7 +28,7 @@ fun <T1, T2, R> flatmapCombined(
     flow1: Flow<T1>,
     flow2: Flow<T2>,
     transform: (t1: T1, t2: T2) -> Flow<R>
-): Flow<R> where T1 : Any, T2 : Any, R : Any = flatmapCombined(listOf(flow1, flow2)) { keys ->
+): Flow<R> = flatmapCombined(listOf(flow1, flow2)) { keys ->
     transform(keys[0] as T1, keys[1] as T2)
 }
 
@@ -38,10 +38,9 @@ fun <T1, T2, T3, R> flatmapCombined(
     flow2: Flow<T2>,
     flow3: Flow<T3>,
     transform: (t1: T1, t2: T2, t3: T3) -> Flow<R>
-): Flow<R> where T1 : Any, T2 : Any, T3 : Any, R : Any =
-    flatmapCombined(listOf(flow1, flow2, flow3)) { keys ->
-        transform(keys[0] as T1, keys[1] as T2, keys[2] as T3)
-    }
+): Flow<R> = flatmapCombined(listOf(flow1, flow2, flow3)) { keys ->
+    transform(keys[0] as T1, keys[1] as T2, keys[2] as T3)
+}
 
 @Suppress("UNCHECKED_CAST")
 fun <T1, T2, T3, T4, R> flatmapCombined(
@@ -50,7 +49,6 @@ fun <T1, T2, T3, T4, R> flatmapCombined(
     flow3: Flow<T3>,
     flow4: Flow<T4>,
     transform: (t1: T1, t2: T2, t3: T3, t4: T4) -> Flow<R>
-): Flow<R> where T1 : Any, T2 : Any, T3 : Any, T4 : Any, R : Any =
-    flatmapCombined(listOf(flow1, flow2, flow3, flow4)) { keys ->
-        transform(keys[0] as T1, keys[1] as T2, keys[2] as T3, keys[3] as T4)
-    }
+): Flow<R> = flatmapCombined(listOf(flow1, flow2, flow3, flow4)) { keys ->
+    transform(keys[0] as T1, keys[1] as T2, keys[2] as T3, keys[3] as T4)
+}