diff --git a/lua/zettelkasten/init.lua b/lua/zettelkasten/init.lua
index bfbeef2..194a75f 100644
--- a/lua/zettelkasten/init.lua
+++ b/lua/zettelkasten/init.lua
@@ -58,7 +58,7 @@ end
 -- table.
 -- Recurses into subdirectories if recursive argument is true.
 function ZK.get_zettel_list(path, recursive)
-    return ls.get_anchors_and_paths(path, recursive or false)
+    return ls.get_anchors_and_paths(path, recursive or false, ZK.options)
 end
 
 return {
diff --git a/lua/zettelkasten/list.lua b/lua/zettelkasten/list.lua
index 223ac90..28cd7e4 100644
--- a/lua/zettelkasten/list.lua
+++ b/lua/zettelkasten/list.lua
@@ -8,10 +8,12 @@ end
 -- TODO transform paths:
 --    * to absolute value (e.g. ~ to home, scandir needs absolute)
 --    * to ensure / at the end (or no /) gets taken into account
-function ls.get_anchors_and_paths(path, recursive)
+function ls.get_anchors_and_paths(path, recursive, options)
+    options = options or {}
     -- TODO check for duplicates and warn user
     local zettel = {}
-    local anchorreg = '^.*/?([%d][%d][%d][%d][%d][%d][%d][%d][%d][%d])[^/]*.md$'
+    local anchorreg = '^.*/?([%d][%d][%d][%d][%d][%d][%d][%d][%d][%d])[^/]*%' ..
+                          (options.zettel_extension or '.md') .. '$'
 
     local handle = vim.loop.fs_scandir(path)
     while handle do