diff --git a/i7h.py b/i7h.py
index 0f42293..2b9501e 100644
--- a/i7h.py
+++ b/i7h.py
@@ -9,5 +9,5 @@ def _f(r):
 
 
 def i18n(s: str) -> str:
-    s = re.sub(r'\w+', _f, s)
+    s = re.sub('[A-Za-z]+', _f, s)
     return s