diff --git a/openconn/openconn.go b/openconn/openconn.go
index aca69fa..301ed27 100644
--- a/openconn/openconn.go
+++ b/openconn/openconn.go
@@ -11,7 +11,7 @@ import (
 type key int
 
 const inChanKey key = 0
-const outChanKey key = 0
+const outChanKey key = 1
 
 // NewContext returns a new Context carrying two new channels.
 func NewContext(ctx context.Context) context.Context {