diff --git a/src/publisher/pubMqttDefs.h b/src/publisher/pubMqttDefs.h
index 2045c2bc..64309b18 100644
--- a/src/publisher/pubMqttDefs.h
+++ b/src/publisher/pubMqttDefs.h
@@ -79,7 +79,7 @@ const char* const subtopics[] PROGMEM = {
     "alarm_start",
     "alarm_end",
     "connected",
-    "not connected",
+    "not_connected",
     "ack_pwr_limit"
 };