diff --git a/src/pyj/read_book/find.pyj b/src/pyj/read_book/find.pyj
index 550fb23f17..edd35adb56 100644
--- a/src/pyj/read_book/find.pyj
+++ b/src/pyj/read_book/find.pyj
@@ -45,7 +45,7 @@ def index_for_node(node, node_list):
 
 
 def tts_word_regex():
-    return /[\p{L}\p{M}]+/gu
+    return /[\p{Letter}\p{Mark}\p{Number}]+/gu
 
 
 def tts_data(text_node, offset):