diff --git a/sonoff/settings.ino b/sonoff/settings.ino
index 6d3263f41..99e81230d 100644
--- a/sonoff/settings.ino
+++ b/sonoff/settings.ino
@@ -858,6 +858,9 @@ void SettingsDelta(void)
     if (Settings.version < 0x0603000A) {
       Settings.param[P_LOOP_SLEEP_DELAY] = LOOP_SLEEP_DELAY;
     }
+    if (Settings.version < 0x0603000E) {
+      Settings.flag2.calc_resolution = CALC_RESOLUTION;
+    }
 
     Settings.version = VERSION;
     SettingsSave(1);