1 files changed, 7 insertions, 4 deletions

diff --git a/training/strategy/dreambooth.py b/training/strategy/dreambooth.py
index 43fe838..35cccbb 100644
--- a/training/strategy/dreambooth.py
+++ b/training/strategy/dreambooth.py
@@ -203,10 +203,13 @@ def dreambooth_prepare(
         text_encoder, unet, optimizer, train_dataloader, val_dataloader, lr_scheduler
     )
 
-    for layer in text_encoder.text_model.encoder.layers[
-        : (-1 * text_encoder_unfreeze_last_n_layers)
-    ]:
-        layer.requires_grad_(False)
+    if text_encoder_unfreeze_last_n_layers == 0:
+        text_encoder.text_model.encoder.requires_grad_(False)
+    elif text_encoder_unfreeze_last_n_layers > 0:
+        for layer in text_encoder.text_model.encoder.layers[
+            : (-1 * text_encoder_unfreeze_last_n_layers)
+        ]:
+            layer.requires_grad_(False)
 
     text_encoder.text_model.embeddings.requires_grad_(False)