diff --git a/lib/galaxy/datatypes/images.py b/lib/galaxy/datatypes/images.py
index f85b060e9dea..ea230866711b 100644
--- a/lib/galaxy/datatypes/images.py
+++ b/lib/galaxy/datatypes/images.py
@@ -304,7 +304,6 @@ def _get_axis_size(shape: Tuple[int, ...], axes: str, axis: str) -> int:
     def sniff(self, filename: str) -> bool:
         with tifffile.TiffFile(filename):
             return True
-        return False
 
 
 class OMETiff(Tiff):