diff --git a/model_server/base/roiset.py b/model_server/base/roiset.py
index ccd79c2d8f42b59a57e9c143637aed0a5f9a09ef..df3714ceffbeb424d2d10f550c05db26f6109d29 100644
--- a/model_server/base/roiset.py
+++ b/model_server/base/roiset.py
@@ -19,7 +19,7 @@ from skimage.morphology import binary_dilation, disk
 
 from .accessors import GenericImageDataAccessor, InMemoryDataAccessor, write_accessor_data_to_file
 from .models import InstanceMaskSegmentationModel
-from .process import get_safe_contours, pad, rescale, make_rgb, resample_to_8bit
+from .process import get_safe_contours, pad, rescale, make_rgb
 from .annotators import draw_box_on_patch, draw_contours_on_patch, draw_boxes_on_3d_image
 from .accessors import generate_file_accessor, PatchStack
 from .process import mask_largest_object
@@ -38,6 +38,7 @@ class PatchParams(BaseModel):
     rgb_overlay_weights: List[float] = [1.0, 1.0, 1.0]
     pad_to: Union[int, None] = 256
     expanded: bool = False
+    force_tif: bool = False
 
 class AnnotatedPatchParams(PatchParams):
     bounding_box_channel: int = 1