diff --git a/config.h b/config.h
index 5b35fcb..023fed6 100644
--- a/config.h
+++ b/config.h
@@ -2,6 +2,7 @@
 #define config_def_h_INCLUDED
 
 #define DEFAULT_FONT "Sans 14"
+#define DEFAULT_ROUNDING 5
 static const int transparency = 255;
 
 struct clr_scheme schemes[] = {