diff --git a/owrx/rigcontrol.py b/owrx/rigcontrol.py
index fb6136af..29016f6c 100644
--- a/owrx/rigcontrol.py
+++ b/owrx/rigcontrol.py
@@ -422,7 +422,8 @@ class RigControl():
                 readable, _, _ = select.select([self.rigctl.stdout, self.rigctl.stderr], [], [])
                 for pipe in readable:
                     rsp = pipe.read().decode("utf-8").strip()
-                    logger.debug("STD{0}: {1}".format("ERR" if pipe==self.rigctl.stderr else "OUT", rsp))
+                    if len(rsp) > 0:
+                        logger.debug("STD{0}: {1}".format("ERR" if pipe==self.rigctl.stderr else "OUT", rsp))
             except Exception as e:
                 logger.debug("RigControl thread done: {1}.".format(str(e)))
                 break