diff --git a/tasmota/settings.ino b/tasmota/settings.ino
index 5ee75c2cefbf..3fe1809b35a5 100644
--- a/tasmota/settings.ino
+++ b/tasmota/settings.ino
@@ -1298,6 +1298,9 @@ void SettingsDelta(void)
       SettingsUpdateText(SET_ADC_PARAM1, parameters);
     }
 #endif  // ESP8266
+    if (Settings.version < 0x09010000) {
+      Settings.dimmer_step = DEFAULT_DIMMER_STEP;
+    }
 
     Settings.version = VERSION;
     SettingsSave(1);