diff --git a/artiq/gui/moninj.py b/artiq/gui/moninj.py
index 25605c4c2..c1ba078f3 100644
--- a/artiq/gui/moninj.py
+++ b/artiq/gui/moninj.py
@@ -351,7 +351,7 @@ class MonInj(TaskObject):
             try:
                 self.socket.sendto(data, (ca, 3250))
             except:
-                logger.error("could not send to device",
+                logger.debug("could not send to device",
                              exc_info=True)
 
     async def _do(self):