diff --git a/nerfreal.py b/nerfreal.py
index 8ec6bb6..4e4b7c0 100644
--- a/nerfreal.py
+++ b/nerfreal.py
@@ -6,6 +6,7 @@ import numpy as np
 import subprocess
 import os
 import time
+import torch.nn.functional as F
 
 from asrreal import ASR
 from rtmp_streaming import StreamerConfig, Streamer