diff --git a/src/main/jni-java-src/it/tdlight/tdnative/NativeClient.java b/src/main/jni-java-src/it/tdlight/tdnative/NativeClient.java
index 5342dd1..beffb6c 100644
--- a/src/main/jni-java-src/it/tdlight/tdnative/NativeClient.java
+++ b/src/main/jni-java-src/it/tdlight/tdnative/NativeClient.java
@@ -2,18 +2,17 @@ package it.tdlight.tdnative;
 
 import it.tdlight.jni.TdApi;
 
+@SuppressWarnings("rawtypes")
 public class NativeClient {
 
 	protected static native int createNativeClient();
 
-	protected static native <R extends TdApi.Object> void nativeClientSend(int nativeClientId,
-			long eventId,
-			TdApi.Function<R> function);
+	protected static native void nativeClientSend(int nativeClientId, long eventId, TdApi.Function function);
 
 	protected static native int nativeClientReceive(int[] clientIds,
 			long[] eventIds,
 			TdApi.Object[] events,
 			double timeout);
 
-	protected static native <R extends TdApi.Object> TdApi.Object nativeClientExecute(TdApi.Function<R> function);
+	protected static native TdApi.Object nativeClientExecute(TdApi.Function function);
 }