diff --git a/sources/tiff/large_image_source_tiff/__init__.py b/sources/tiff/large_image_source_tiff/__init__.py
index c3b825659..71c516714 100644
--- a/sources/tiff/large_image_source_tiff/__init__.py
+++ b/sources/tiff/large_image_source_tiff/__init__.py
@@ -651,7 +651,7 @@ def getPreferredLevel(self, level):
         baselevel = level
         while self._tiffDirectories[level] is None and level < self.levels - 1:
             level += 1
-        while level - baselevel > self._maxSkippedLevels:
+        while level - baselevel >= self._maxSkippedLevels:
             level -= self._maxSkippedLevels
         return level