diff --git a/tmtcc.py b/tmtcc.py
index 503cf9d..ddc100a 100755
--- a/tmtcc.py
+++ b/tmtcc.py
@@ -277,6 +277,9 @@ def main():  # noqa C901: Complexity okay here.
                 _LOGGER.info("TMTC Client in IDLE mode")
                 time.sleep(3.0)
             elif state.request == BackendRequest.DELAY_LISTENER:
+                if tc_handler.proxy_op:
+                    time.sleep(0.1)
+                    continue
                 if tc_handler.cfdp_done():
                     _LOGGER.info("CFDP transaction done, closing client")
                     sys.exit(0)