diff --git a/edsnlp/pipes/ner/disorders/diabetes/patterns.py b/edsnlp/pipes/ner/disorders/diabetes/patterns.py
index b51ad1a89..2ca4ed005 100644
--- a/edsnlp/pipes/ner/disorders/diabetes/patterns.py
+++ b/edsnlp/pipes/ner/disorders/diabetes/patterns.py
@@ -55,7 +55,7 @@
         ),
         dict(
             name="corticoid",
-            regex=r"(bctc\b|cortico(?:.?induit)?)",
+            regex=r"(\bctc\b|cortico(?:.?induit)?)",
             window=6,
         ),
     ],