diff --git a/index.js b/index.js
index aaa1d414987b57f97e9f62e167f928be83d3da6a..290096186450dfb61707f2db3f341fff8a017a52 100644
--- a/index.js
+++ b/index.js
@@ -247531,7 +247531,7 @@ async function getInseeCode(postalCode, city) {
 function sanitizeCity(city) {
   return city
     .toLowerCase()
-    .replace(/st/g, 'saint')
+    .replace(/\bst\b/i, 'saint')
     .replace(/[âêîôûäëïü-\sʼ'éèç]/g, match => REPLACE_CHARS[match])
     .trim()
 }