diff --git a/server/clip_server/model/clip_model.py b/server/clip_server/model/clip_model.py
index fc8a9dd01..7164cfea8 100644
--- a/server/clip_server/model/clip_model.py
+++ b/server/clip_server/model/clip_model.py
@@ -35,7 +35,18 @@ def __new__(cls, name: str, **kwargs):
 
                 instance = super().__new__(MultilingualCLIPModel)
             else:
-                raise ValueError(f'The CLIP model name=`{name}` is not supported.')
+                raise ValueError(
+                    'CLIP model {} not found; below is a list of all available models:\n{}'.format(
+                        name,
+                        ''.join(
+                            [
+                                '\t- {}\n'.format(i)
+                                for i in list(_OPENCLIP_MODELS.keys())
+                                + list(_MULTILINGUALCLIP_MODELS.keys())
+                            ]
+                        ),
+                    )
+                )
         else:
             instance = super().__new__(cls)
         return instance
diff --git a/server/clip_server/model/clip_onnx.py b/server/clip_server/model/clip_onnx.py
index 980e71b52..cf82f9100 100644
--- a/server/clip_server/model/clip_onnx.py
+++ b/server/clip_server/model/clip_onnx.py
@@ -193,7 +193,10 @@ def __init__(self, name: str, model_path: str = None):
                     )
         else:
             raise RuntimeError(
-                f'Model {name} not found; available models = {list(_MODELS.keys())}'
+                'CLIP model {} not found or not supports ONNX backend; below is a list of all available models:\n{}'.format(
+                    name,
+                    ''.join(['\t- {}\n'.format(i) for i in list(_MODELS.keys())]),
+                )
             )
 
     @staticmethod
diff --git a/server/clip_server/model/clip_trt.py b/server/clip_server/model/clip_trt.py
index b43a20c5b..1510003c5 100644
--- a/server/clip_server/model/clip_trt.py
+++ b/server/clip_server/model/clip_trt.py
@@ -114,7 +114,10 @@ def __init__(
                 save_engine(text_engine, self._textual_path)
         else:
             raise RuntimeError(
-                f'Model {name} not found or not supports Nvidia TensorRT backend; available models = {list(_MODELS.keys())}'
+                'CLIP model {} not found or not supports Nvidia TensorRT backend; below is a list of all available models:\n{}'.format(
+                    name,
+                    ''.join(['\t- {}\n'.format(i) for i in list(_MODELS.keys())]),
+                )
             )
 
     @staticmethod