diff --git a/esp32/src/main.cpp b/esp32/src/main.cpp
index 93718e0..211b8ae 100644
--- a/esp32/src/main.cpp
+++ b/esp32/src/main.cpp
@@ -1104,7 +1104,7 @@ void plantcontrol()
     Serial.flush();
   }
 
-bool isLowLight = (mSolarVoltage <= SOLAR_CHARGE_MAX_VOLTAGE);
+bool isLowLight = (mSolarVoltage <= SOLAR_CHARGE_MIN_VOLTAGE);
 #if defined(TIMED_LIGHT_PIN)
   
   bool shouldLight = determineTimedLightState(isLowLight);