diff --git a/weboob/frontends/havesex/havesex.py b/weboob/frontends/havesex/havesex.py
index 256d89c4..14f30fa6 100644
--- a/weboob/frontends/havesex/havesex.py
+++ b/weboob/frontends/havesex/havesex.py
@@ -39,7 +39,7 @@ class HaveSex(PromptApplication):
         self.load_config()
         self.load_backends(ICapDating, storage=self.create_storage(self.STORAGE_FILENAME))
 
-        self.weboob.do('init_optimizations')
+        self.weboob.do('init_optimizations').wait()
 
         self.optims('Starting', 'start_optimization', self.config.get('optimizations').split(' '))