diff --git a/qa/rpc-tests/test_framework/mininode.py b/qa/rpc-tests/test_framework/mininode.py
index 41c8ab079..b32b8dcfa 100755
--- a/qa/rpc-tests/test_framework/mininode.py
+++ b/qa/rpc-tests/test_framework/mininode.py
@@ -1145,7 +1145,7 @@ class SingleNodeConnCB(NodeConnCB):
         def received_pong():
             return (self.last_pong.nonce == self.ping_counter)
         self.send_message(msg_ping(nonce=self.ping_counter))
-        success = wait_until(received_pong, timeout)
+        success = wait_until(received_pong, timeout=timeout)
         self.ping_counter += 1
         return success