diff --git a/src/diffusers/pipelines/controlnet/pipeline_controlnet_inpaint_sd_xl.py b/src/diffusers/pipelines/controlnet/pipeline_controlnet_inpaint_sd_xl.py
index 56c2dc10a570..966196b4469c 100644
--- a/src/diffusers/pipelines/controlnet/pipeline_controlnet_inpaint_sd_xl.py
+++ b/src/diffusers/pipelines/controlnet/pipeline_controlnet_inpaint_sd_xl.py
@@ -227,7 +227,7 @@ def __init__(
         tokenizer: CLIPTokenizer,
         tokenizer_2: CLIPTokenizer,
         unet: UNet2DConditionModel,
-        controlnet: ControlNetModel,
+        controlnet: Union[ControlNetModel, List[ControlNetModel], Tuple[ControlNetModel], MultiControlNetModel],
         scheduler: KarrasDiffusionSchedulers,
         requires_aesthetics_score: bool = False,
         force_zeros_for_empty_prompt: bool = True,