diff --git a/src/markitdown/_markitdown.py b/src/markitdown/_markitdown.py
index d298f70..a7fb28a 100644
--- a/src/markitdown/_markitdown.py
+++ b/src/markitdown/_markitdown.py
@@ -1237,8 +1237,7 @@ def _append_ext(self, extensions, ext):
         if ext == "":
             return
         # if ext not in extensions:
-        if True:
-            extensions.append(ext)
+        extensions.append(ext)
 
     def _guess_ext_magic(self, path):
         """Use puremagic (a Python implementation of libmagic) to guess a file's extension based on the first few bytes."""