diff --git a/Readme.md b/Readme.md
index c5a34e8..4ae010c 100644
--- a/Readme.md
+++ b/Readme.md
@@ -70,7 +70,7 @@ setInterval(function(){
 
   The "*" character may be used as a wildcard. Suppose for example your library has debuggers named "connect:bodyParser", "connect:compress", "connect:session", instead of listing all three with `DEBUG=connect:bodyParser,connect.compress,connect:session`, you may simply do `DEBUG=connect:*`, or to run everything using this module simply use `DEBUG=*`.
 
-  You can also exclude specific debuggers by prefixing them with a "-" character.  For example, `DEBUG=* -connect:*` would include all debuggers except those starting with "connect:".
+  You can also exclude specific debuggers by prefixing them with a "-" character.  For example, `DEBUG=*,-connect:*` would include all debuggers except those starting with "connect:".
 
 ## Browser support