diff --git a/tasmota/xdrv_02_9_mqtt.ino b/tasmota/xdrv_02_9_mqtt.ino
index d9d3418e6..167fea8a3 100644
--- a/tasmota/xdrv_02_9_mqtt.ino
+++ b/tasmota/xdrv_02_9_mqtt.ino
@@ -1760,7 +1760,7 @@ const char HTTP_FORM_MQTT1[] PROGMEM =
   "<p><b>" D_CLIENT "</b> (%s)<br><input id='mc' placeholder=\"%s\" value=\"%s\"></p>";
 const char HTTP_FORM_MQTT2[] PROGMEM =
   "<p><b>" D_USER "</b> (" MQTT_USER ")<br><input id='mu' placeholder=\"" MQTT_USER "\" value=\"%s\"></p>"
-  "<p><label><b>" D_PASSWORD "</b><input type='checkbox' onclick='sp(\"mp\")'></label><br><input id='mp' type='password' placeholder=\"" D_PASSWORD "\" value=\"" D_ASTERISK_PWD "\"></p>"
+  "<p><label><b>" D_PASSWORD "</b><input type='checkbox' onclick='sp(\"mp\")'></label><br><input id='mp' type='password' minlength='5' placeholder=\"" D_PASSWORD "\" value=\"" D_ASTERISK_PWD "\"></p>"
   "<p><b>" D_TOPIC "</b> = %%topic%% (%s)<br><input id='mt' placeholder=\"%s\" value=\"%s\"></p>"
   "<p><b>" D_FULL_TOPIC "</b> (%s)<br><input id='mf' placeholder=\"%s\" value=\"%s\"></p>";