diff --git a/server/src/annotation.py b/server/src/annotation.py
index 1a1b3f71..7e96f471 100644
--- a/server/src/annotation.py
+++ b/server/src/annotation.py
@@ -1284,7 +1284,6 @@ def __init__(self, document=None, text=None, read_only=False, lock_dir=None, sou
             if document.endswith('.txt'):
                 textfile_path = document
             else:
-                textfile_path = remove_known_suffix(document, KNOWN_FILE_SUFF)
                 # Do we have a known extension?
                 _, file_ext = splitext(document)
                 if not file_ext or file_ext not in KNOWN_FILE_SUFF: