diff --git a/src/PIL/TiffImagePlugin.py b/src/PIL/TiffImagePlugin.py
index 6bf39b75a..a246994ef 100644
--- a/src/PIL/TiffImagePlugin.py
+++ b/src/PIL/TiffImagePlugin.py
@@ -2202,6 +2202,12 @@ class AppendingTiffWriter(io.BytesIO):
             if tag in self.Tags:
                 cur_pos = self.f.tell()
 
+                tagname = TiffTags.lookup(tag).name
+                typname = TYPES.get(field_type, "unknown")
+                msg = f"fixIFD: {tagname} ({tag}) - type: {typname} ({field_type})"
+                msg += f"- type size: {field_size} - count: {count}"
+                logger.debug(msg)
+
                 if is_local:
                     self._fixOffsets(count, field_size)
                     self.f.seek(cur_pos + 4)