diff --git a/src/main.cpp b/src/main.cpp
index 5b1de52..29a43b7 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -5,14 +5,14 @@ WiFiUDP udpClient;
 Syslog syslog(udpClient, SYSLOG_PROTO_IETF);
 
 const int PIN_RELAY = D1;
-#define OUTPUT(x)  digitalWrite(PIN_RELAY, x ? LOW : HIGH);
+#define OUTPUT_SET(x)  digitalWrite(PIN_RELAY, x ? LOW : HIGH);
 int timer = 0;
 HomieNode powerNode("power", "switch");
 
 bool powerStateHandler(const HomieRange& range, const String& value) {
     if (value != "true" && value != "false") return false;
     bool on = (value == "true");
-    OUTPUT(on);
+    OUTPUT_SET(on);
     powerNode.setProperty("state").send(value);
     if(!on)
 	powerNode.setProperty("timer").send("0");
@@ -29,14 +29,14 @@ bool powerTimerHandler(const HomieRange& range, const String& value) {
     powerNode.setProperty("timer").send(String(settimer));
     powerNode.setProperty("state").send("on");
     Homie.getLogger() << "Power is on for " << settimer << "minutes" << endl;
-    OUTPUT(true);
+    OUTPUT_SET(true);
     return true;
 }
 
 
 void setupHandler() {
     pinMode(PIN_RELAY, OUTPUT);
-    OUTPUT(false);
+    OUTPUT_SET(false);
     powerNode.setProperty("state").send("off");
     powerNode.setProperty("timer").send("0");
 }