diff --git a/weboob/tools/config/dbmconfig.py b/weboob/tools/config/dbmconfig.py
index 27d24e4596ab742b238ffd7f4118c6946ed19198..e8a0c0754fe065daccf87d71ee2551e2125dcce3 100644
--- a/weboob/tools/config/dbmconfig.py
+++ b/weboob/tools/config/dbmconfig.py
@@ -45,7 +45,8 @@ def load(self, default={}):
         self.storage = dbm.open(self.path, 'c')
 
     def save(self):
-        pass
+        if hasattr(self.storage, 'sync'):
+            self.storage.sync()
 
     def get(self, *args, **kwargs):
         key = '.'.join(args)