diff --git a/modules/bp/browser.py b/modules/bp/browser.py
index 611b28538e58c3fb73937f5137cf3fb69b65f09a..ae5fedc61189d6a57e7c0cdbffc2ede01d4090eb 100644
--- a/modules/bp/browser.py
+++ b/modules/bp/browser.py
@@ -418,7 +418,10 @@ def iter_investment(self, account):
         if account.type in (account.TYPE_PEA, account.TYPE_MARKET):
             self.go_linebourse(account)
             investments = list(self.linebourse.iter_investment(account.id))
-            investments.append(self.linebourse.get_liquidity(account.id))
+            liquidity = self.linebourse.get_liquidity(account.id)
+            if liquidity:
+                # avoid to append None
+                investments.append(liquidity)
             return investments
 
         if account.type != Account.TYPE_LIFE_INSURANCE: