diff --git a/extras/BLIP/models/blip_pretrain.py b/extras/BLIP/models/blip_pretrain.py
index 9b8a3a4..9aba015 100644
--- a/extras/BLIP/models/blip_pretrain.py
+++ b/extras/BLIP/models/blip_pretrain.py
@@ -301,7 +301,7 @@ def tie_encoder_decoder_weights(encoder: nn.Module, decoder: nn.Module, base_mod
                 len(encoder_modules) > 0
             ), f"Encoder module {encoder_pointer} does not match decoder module {decoder_pointer}"
 
-            all_encoder_weights = set([module_name + "/" + sub_name for sub_name in encoder_modules.keys()])
+            all_encoder_weights = set([f"{module_name}/{sub_name}" for sub_name in encoder_modules.keys()])
             encoder_layer_pos = 0
             for name, module in decoder_modules.items():
                 if name.isdigit():
@@ -326,12 +326,12 @@ def tie_encoder_decoder_weights(encoder: nn.Module, decoder: nn.Module, base_mod
                 tie_encoder_to_decoder_recursively(
                     decoder_modules[decoder_name],
                     encoder_modules[encoder_name],
-                    module_name + "/" + name,
+                    f"{module_name}/{name}",
                     uninitialized_encoder_weights,
                     skip_key,
                     depth=depth + 1,
                 )
-                all_encoder_weights.remove(module_name + "/" + encoder_name)
+                all_encoder_weights.remove(f"{module_name}/{encoder_name}")
 
             uninitialized_encoder_weights += list(all_encoder_weights)