diff --git a/res/config.ini b/res/config.ini
index f134493..886f9a7 100644
--- a/res/config.ini
+++ b/res/config.ini
@@ -145,7 +145,8 @@ colormix_col3 = 0x20000000
 
 # For custom binds: the horizontal limit in characters for each
 # line of custom binds before moving on to the next.
-custom_bind_width = 0
+# If null, defaults to the width of the terminal instead.
+custom_bind_width = null
 
 # Custom sessions directory
 # You can specify multiple directories,