diff --git a/spoolman/api/v1/models.py b/spoolman/api/v1/models.py
index abfd7fc..79aa320 100644
--- a/spoolman/api/v1/models.py
+++ b/spoolman/api/v1/models.py
@@ -60,7 +60,7 @@ class Vendor(BaseModel):
     )
     empty_spool_weight: Optional[float] = Field(
         None,
-        gt=0,
+        ge=0,
         description="The empty spool weight, in grams.",
         examples=[140],
     )