diff --git a/kernel/include/ksu_hook.h b/kernel/include/ksu_hook.h
index a3520c6b..d4a2cddb 100644
--- a/kernel/include/ksu_hook.h
+++ b/kernel/include/ksu_hook.h
@@ -21,4 +21,8 @@ int ksu_handle_vfs_read(struct file **file_ptr, char __user **buf_ptr,
 int ksu_handle_execveat(int *fd, struct filename **filename_ptr, void *argv,
 			void *envp, int *flags);
 
-#endif
\ No newline at end of file
+// For volume button
+int ksu_handle_input_handle_event(unsigned int *type, unsigned int *code, 
+				  int *value);
+
+#endif