diff --git a/mmpretrain/models/multimodal/minigpt4/minigpt4.py b/mmpretrain/models/multimodal/minigpt4/minigpt4.py
index 4bbd5aaa..5e101648 100644
--- a/mmpretrain/models/multimodal/minigpt4/minigpt4.py
+++ b/mmpretrain/models/multimodal/minigpt4/minigpt4.py
@@ -155,8 +155,8 @@ class MiniGPT4(BaseModel):
             top_p=0.9,
             repetition_penalty=1.0,
             length_penalty=1.0,
-            temperature=1.0,
-            **generation_cfg)
+            temperature=1.0)
+        self.generation_cfg.update(**generation_cfg)
 
         if hasattr(self, 'register_load_state_dict_post_hook'):
             self.register_load_state_dict_post_hook(self._load_llama_proj_hook)