--- a/thermferm/thermferm.c	Thu Jul 24 17:42:34 2014 +0200
+++ b/thermferm/thermferm.c	Thu Jul 24 20:45:15 2014 +0200
@@ -33,7 +33,7 @@
 #include "xutil.h"
 
 
-int			current_unit = -1;
+char			*current_unit = NULL;
 int			tempA = 80;
 int			tempB = 80;