diff --git a/GANDLF/data/inference_dataloader_histopath.py b/GANDLF/data/inference_dataloader_histopath.py
index d3285deea..1f34c9a74 100644
--- a/GANDLF/data/inference_dataloader_histopath.py
+++ b/GANDLF/data/inference_dataloader_histopath.py
@@ -136,7 +136,7 @@ def __getitem__(self, idx):
             self._selected_level,
             (self._patch_size[0], self._patch_size[1]),
             # as_array=True, openslide-python doesn't return a ndarray, return an image
-        )
+        ).convert('RGB')
 
         patch = np.asarray(patch)  # convert the image to ndarray
         # this is to ensure that channels come at the beginning