diff --git a/things/DeviceRelay.cpp b/things/DeviceRelay.cpp
index 3924ff6..46480f6 100644
--- a/things/DeviceRelay.cpp
+++ b/things/DeviceRelay.cpp
@@ -11,11 +11,11 @@ void DeviceRelay::deviceSetup() {
 
 bool DeviceRelay::relayOnHandler(String value) {
   if (value == "true") {
-    setRelay(HIGH);
+    setRelay(LOW);
     Homie.setNodeProperty(relayNode, "on", "true");
     Serial.println("relay is on");
   } else if (value == "false") {
-    setRelay(LOW);
+    setRelay(HIGH);
     Homie.setNodeProperty(relayNode, "on", "false");
     Serial.println("relay is off");
   } else {