diff --git a/packages/overture-schema-system/src/overture/schema/system/primitive/bbox.py b/packages/overture-schema-system/src/overture/schema/system/primitive/bbox.py
index ac0eef391..c078290c5 100644
--- a/packages/overture-schema-system/src/overture/schema/system/primitive/bbox.py
+++ b/packages/overture-schema-system/src/overture/schema/system/primitive/bbox.py
@@ -237,7 +237,7 @@ def validator(
                 elif isinstance(value, tuple | list):
                     return cls.from_geo_json(value)
                 elif isinstance(value, dict):
-                    BBox(**value)
+                    return BBox(**value)
                 else:
                     raise TypeError(
                         f"expected `BBox` or `tuple` or `list`; got `{type(value).__name__}` with value {repr(value)}"
diff --git a/packages/overture-schema-system/tests/primitive/test_bbox.py b/packages/overture-schema-system/tests/primitive/test_bbox.py
index 530793bf5..31146720a 100644
--- a/packages/overture-schema-system/tests/primitive/test_bbox.py
+++ b/packages/overture-schema-system/tests/primitive/test_bbox.py
@@ -195,6 +195,7 @@ class TestModel(BaseModel):
     [
         ((1, 2, 3, 4), BBox(xmin=1, ymin=2, xmax=3, ymax=4)),
         (BBox(0, -1, -2, 3), BBox(0, -1, -2, 3)),
+        ({"xmin": -1, "ymin": -2, "xmax": 1, "ymax": 2}, BBox(-1, -2, 1, 2)),
     ],
 )
 def test_pydantic_validation_success(input: Any, expect: BBox) -> None: