diff --git a/WaterishOS-core2.0/config.h b/WaterishOS-core2.0/config.h
index e483c6b..7f7b3dc 100644
--- a/WaterishOS-core2.0/config.h
+++ b/WaterishOS-core2.0/config.h
@@ -4,4 +4,4 @@ const byte InteruptPinA=1;
 const byte InteruptPinB=3;
 const byte arduinoInterrupt=1;
 const String nodename="devkit";
-#define LCD_I2C 0x27
+#define LCD_I2C '0x27'