diff --git a/electrum/wallet.py b/electrum/wallet.py
index dbedb9d80..4d98ca6a6 100644
--- a/electrum/wallet.py
+++ b/electrum/wallet.py
@@ -795,11 +795,11 @@ class Abstract_Wallet(AddressSynchronizer, ABC):
         self.save_db()
 
     def clear_invoices(self):
-        self.invoices = {}
+        self.invoices.clear()
         self.save_db()
 
     def clear_requests(self):
-        self.receive_requests = {}
+        self.receive_requests.clear()
         self.save_db()
 
     def get_invoices(self):