diff --git a/services/managers/phpbb3_manager.py b/services/managers/phpbb3_manager.py
index 1521c580..92384328 100755
--- a/services/managers/phpbb3_manager.py
+++ b/services/managers/phpbb3_manager.py
@@ -67,7 +67,7 @@ class Phpbb3Manager:
     @staticmethod
     def __santatize_username(username):
         sanatized = username.replace(" ", "_")
-        sanatized = sanatized.replace("'", "")
+        sanatized = sanatized.replace("'", "_")
         return sanatized.lower()
 
     @staticmethod