diff --git a/synth.py b/synth.py
index a6f6ba14..d75fe43c 100644
--- a/synth.py
+++ b/synth.py
@@ -32,8 +32,8 @@
 
 # Sphinx interprets `*` as emphasis
 s.replace(
-    ["google/cloud/**/*_client.py", "google/cloud/**/cloud_tts.py"],
-    "((en)|(no)|(nb)(cmn)|(yue))-\*",
+    ["google/cloud/**/*client.py", "google/cloud/**/cloud_tts.py"],
+    "((en)|(no)|(nb)|(cmn)|(yue))-\*",
     "\g<1>-\*",
 )