diff --git a/piexif/_load.py b/piexif/_load.py
index 6176028..a49045a 100644
--- a/piexif/_load.py
+++ b/piexif/_load.py
@@ -154,6 +154,8 @@ def convert_value(self, val):
             if length > 4:
                 pointer = struct.unpack(self.endian_mark + "L", value)[0]
                 data = self.tiftag[pointer: pointer+length - 1]
+            elif length == 1:
+                data = value[0:length]
             else:
                 data = value[0: length - 1]
         elif t == TYPES.Short: # SHORT
@@ -267,4 +269,4 @@ def _get_key_name_dict(exif_dict):
         "Interop":{TAGS["Interop"][n]["name"]:value for n, value in exif_dict["Interop"].items()},
         "thumbnail":exif_dict["thumbnail"],
     }
-    return new_dict
\ No newline at end of file
+    return new_dict