diff --git a/denoising_diffusion_pytorch/denoising_diffusion_pytorch.py b/denoising_diffusion_pytorch/denoising_diffusion_pytorch.py
index e0b6aee5c..81ef4ad14 100644
--- a/denoising_diffusion_pytorch/denoising_diffusion_pytorch.py
+++ b/denoising_diffusion_pytorch/denoising_diffusion_pytorch.py
@@ -873,7 +873,7 @@ def __init__(
         amp = False,
         mixed_precision_type = 'fp16',
         split_batches = True,
-        convert_image_to = None,
+        convert_image_to = 'RGB',
         calculate_fid = True,
         inception_block_idx = 2048,
         max_grad_norm = 1.,
diff --git a/denoising_diffusion_pytorch/version.py b/denoising_diffusion_pytorch/version.py
index 4175d3998..be0b61075 100644
--- a/denoising_diffusion_pytorch/version.py
+++ b/denoising_diffusion_pytorch/version.py
@@ -1 +1 @@
-__version__ = '1.9.2'
+__version__ = '1.9.3'