diff --git a/lib/commands.py b/lib/commands.py
index 6cf2b0af5..95b72e1e4 100644
--- a/lib/commands.py
+++ b/lib/commands.py
@@ -250,7 +250,7 @@ class Commands:
         return electrum.ELECTRUM_VERSION
  
     def getmpk(self):
-        return self.wallet.get_master_public_key()
+        return self.wallet.get_master_public_keys()
 
     def getseed(self):
         mnemonic = self.wallet.get_mnemonic(self.password)