diff --git a/gui.py b/gui.py
index cf86f33..3e409d2 100644
--- a/gui.py
+++ b/gui.py
@@ -133,7 +133,7 @@ class RVC:
             score, ix = self.index.search(npy, k=8)
             weight = np.square(1 / score)
             weight /= weight.sum(axis=1, keepdims=True)
-            npy = np.sum(big_npy[ix] * np.expand_dims(weight, axis=2), axis=1).astype(
+            npy = np.sum(self.big_npy[ix] * np.expand_dims(weight, axis=2), axis=1).astype(
                 "float16"
             )