diff --git a/lama_cleaner/const.py b/lama_cleaner/const.py
index b831ae4..5caf7b0 100644
--- a/lama_cleaner/const.py
+++ b/lama_cleaner/const.py
@@ -106,6 +106,7 @@ class RealESRGANModelName(str, Enum):
 RealESRGANModelNameList = [e.value for e in RealESRGANModelName]
 
 INTERACTIVE_SEG_HELP = "Enable interactive segmentation using Segment Anything."
+INTERACTIVE_SEG_MODEL_HELP = "Model size: vit_b < vit_l < vit_h. Bigger model size means better segmentation but slower speed."
 AVAILABLE_INTERACTIVE_SEG_MODELS = ["vit_b", "vit_l", "vit_h"]
 AVAILABLE_INTERACTIVE_SEG_DEVICES = ["cuda", "cpu", "mps"]
 REMOVE_BG_HELP = "Enable remove background. Always run on CPU"
diff --git a/lama_cleaner/parse_args.py b/lama_cleaner/parse_args.py
index 9b72727..5af1cb2 100644
--- a/lama_cleaner/parse_args.py
+++ b/lama_cleaner/parse_args.py
@@ -85,12 +85,13 @@ def parse_args():
     parser.add_argument(
         "--interactive-seg-model",
         default="vit_l",
-        help=AVAILABLE_INTERACTIVE_SEG_MODELS,
+        choices=AVAILABLE_INTERACTIVE_SEG_MODELS,
+        help=INTERACTIVE_SEG_MODEL_HELP
     )
     parser.add_argument(
         "--interactive-seg-device",
         default="cpu",
-        help=AVAILABLE_INTERACTIVE_SEG_DEVICES,
+        choices=AVAILABLE_INTERACTIVE_SEG_DEVICES,
     )
     parser.add_argument(
         "--enable-remove-bg",
diff --git a/lama_cleaner/web_config.py b/lama_cleaner/web_config.py
index e2f85e9..39cba72 100644
--- a/lama_cleaner/web_config.py
+++ b/lama_cleaner/web_config.py
@@ -123,7 +123,7 @@ def main(config_file: str):
                 )
                 interactive_seg_model = gr.Radio(
                     AVAILABLE_INTERACTIVE_SEG_MODELS,
-                    label="Segment Anything models. Model size: vit_b < vit_l < vit_h. Bigger model size means better segmentation but slower speed.",
+                    label=f"Segment Anything models. {INTERACTIVE_SEG_MODEL_HELP}",
                     value=init_config.interactive_seg_model,
                 )
                 interactive_seg_device = gr.Radio(