diff --git a/modules/api/models.py b/modules/api/models.py
index f44e5dca..bab00e1d 100644
--- a/modules/api/models.py
+++ b/modules/api/models.py
@@ -262,7 +262,7 @@ class SDModelItem(BaseModel):
     hash: Optional[str] = Field(title="Short hash")
     sha256: Optional[str] = Field(title="sha256 hash")
     filename: str = Field(title="Filename")
-    config: Optional[str] = Field(title="Config file")
+    config: Optional[str] = Field(default=None, title="Config file")
 
 class SDVaeItem(BaseModel):
     class Config: