diff --git a/extensions-builtin/Lora/ui_extra_networks_lora.py b/extensions-builtin/Lora/ui_extra_networks_lora.py
index dac90a86c..df02c663b 100644
--- a/extensions-builtin/Lora/ui_extra_networks_lora.py
+++ b/extensions-builtin/Lora/ui_extra_networks_lora.py
@@ -68,6 +68,7 @@ class ExtraNetworksPageLora(ui_extra_networks.ExtraNetworksPage):
         return item
 
     def list_items(self):
+        # instantiate a list to protect against concurrent modification
         names = list(networks.available_networks)
         for index, name in enumerate(names):
             item = self.create_item(name, index)
diff --git a/modules/ui_extra_networks_checkpoints.py b/modules/ui_extra_networks_checkpoints.py
index 35e958a00..df7efb2e1 100644
--- a/modules/ui_extra_networks_checkpoints.py
+++ b/modules/ui_extra_networks_checkpoints.py
@@ -33,6 +33,7 @@ class ExtraNetworksPageCheckpoints(ui_extra_networks.ExtraNetworksPage):
         }
 
     def list_items(self):
+        # instantiate a list to protect against concurrent modification
         names = list(sd_models.checkpoints_list)
         for index, name in enumerate(names):
             item = self.create_item(name, index)
diff --git a/modules/ui_extra_networks_hypernets.py b/modules/ui_extra_networks_hypernets.py
index 74f7d8472..c96c4fa3b 100644
--- a/modules/ui_extra_networks_hypernets.py
+++ b/modules/ui_extra_networks_hypernets.py
@@ -34,6 +34,7 @@ class ExtraNetworksPageHypernetworks(ui_extra_networks.ExtraNetworksPage):
         }
 
     def list_items(self):
+        # instantiate a list to protect against concurrent modification
         names = list(shared.hypernetworks)
         for index, name in enumerate(names):
             item = self.create_item(name, index)
diff --git a/modules/ui_extra_networks_textual_inversion.py b/modules/ui_extra_networks_textual_inversion.py
index 71c38fabc..1b334fda1 100644
--- a/modules/ui_extra_networks_textual_inversion.py
+++ b/modules/ui_extra_networks_textual_inversion.py
@@ -31,6 +31,7 @@ class ExtraNetworksPageTextualInversion(ui_extra_networks.ExtraNetworksPage):
         }
 
     def list_items(self):
+        # instantiate a list to protect against concurrent modification
         names = list(sd_hijack.model_hijack.embedding_db.word_embeddings)
         for index, name in enumerate(names):
             item = self.create_item(name, index)