diff --git a/drivers/staging/android/binder.c b/drivers/staging/android/binder.c
index 574e99210c36..668bec7213d5 100644
--- a/drivers/staging/android/binder.c
+++ b/drivers/staging/android/binder.c
@@ -365,7 +365,7 @@ binder_defer_work(struct binder_proc *proc, enum binder_deferred_state defer);
 /*
  * copied from get_unused_fd_flags
  */
-int task_get_unused_fd_flags(struct binder_proc *proc, int flags)
+static int task_get_unused_fd_flags(struct binder_proc *proc, int flags)
 {
 	struct files_struct *files = proc->files;
 	int fd, error;