diff --git a/modules/loaders.py b/modules/loaders.py
index cd9d0f88..5099ffb0 100644
--- a/modules/loaders.py
+++ b/modules/loaders.py
@@ -46,7 +46,7 @@ loaders_and_params = OrderedDict({
         'no_offload_kqv',
         'row_split',
         'tensorcores',
-        'flash-attn',
+        'flash_attn',
         'streaming_llm',
         'attention_sink_size',
     ],
@@ -72,7 +72,7 @@ loaders_and_params = OrderedDict({
         'no_offload_kqv',
         'row_split',
         'tensorcores',
-        'flash-attn',
+        'flash_attn',
         'streaming_llm',
         'attention_sink_size',
         'llamacpp_HF_info',
diff --git a/modules/ui.py b/modules/ui.py
index a202d325..f88c0a82 100644
--- a/modules/ui.py
+++ b/modules/ui.py
@@ -102,7 +102,7 @@ def list_model_elements():
         'no_offload_kqv',
         'row_split',
         'tensorcores',
-        'flash-attn',
+        'flash_attn',
         'streaming_llm',
         'attention_sink_size',
         'hqq_backend',
diff --git a/modules/ui_model_menu.py b/modules/ui_model_menu.py
index d240bb6a..d8b53b11 100644
--- a/modules/ui_model_menu.py
+++ b/modules/ui_model_menu.py
@@ -115,7 +115,7 @@ def create_ui():
                             shared.gradio['load_in_4bit'] = gr.Checkbox(label="load-in-4bit", value=shared.args.load_in_4bit)
                             shared.gradio['use_double_quant'] = gr.Checkbox(label="use_double_quant", value=shared.args.use_double_quant)
                             shared.gradio['use_flash_attention_2'] = gr.Checkbox(label="use_flash_attention_2", value=shared.args.use_flash_attention_2, info='Set use_flash_attention_2=True while loading the model.')
-                            shared.gradio['flash-attn'] = gr.Checkbox(label="flash-attn", value=shared.args.flash_attn, info='Use flash-attention.')
+                            shared.gradio['flash_attn'] = gr.Checkbox(label="flash_attn", value=shared.args.flash_attn, info='Use flash-attention.')
                             shared.gradio['auto_devices'] = gr.Checkbox(label="auto-devices", value=shared.args.auto_devices)
                             shared.gradio['tensorcores'] = gr.Checkbox(label="tensorcores", value=shared.args.tensorcores, info='NVIDIA only: use llama-cpp-python compiled with tensor cores support. This increases performance on RTX cards.')
                             shared.gradio['streaming_llm'] = gr.Checkbox(label="streaming_llm", value=shared.args.streaming_llm, info='(experimental) Activate StreamingLLM to avoid re-evaluating the entire prompt when old messages are removed.')