diff --git a/src/util.h b/src/util.h
index eee23a7..af00a96 100644
--- a/src/util.h
+++ b/src/util.h
@@ -60,6 +60,7 @@ enum class Macros {
     Beep1 = 'q',
     Beep2 = 'r',
     Beep3 = 's',
+    Temperature = 'H',
 };
 
 // symbols should be inserted as string representations of their numeric value prefixed by ^