diff --git a/cmd/9p/main.go b/cmd/9p/main.go
index 535a461..f2e0d9a 100644
--- a/cmd/9p/main.go
+++ b/cmd/9p/main.go
@@ -31,8 +31,7 @@ import (
 )
 
 var (
-	addr  = flag.String("a", "", "server address (default: unix!$ns/ollie)")
-	aname = flag.String("A", "", "attach name (aname in Tattach)")
+	addr   = flag.String("a", "", "server address (default: unix!$ns/ollie)")
 	noauth = flag.Bool("n", false, "no authentication")
 )
 
@@ -113,13 +112,12 @@ func dial() *client.Fsys {
 		address = ns + "/ollie"
 	}
 
-	var fsys *client.Fsys
-	var err error
-	if *aname != "" {
-		fsys, err = mountWithAname(address, *aname)
-	} else {
-		fsys, err = client.Mount("unix", address)
+	aname := os.Getenv("OLLIE_UNAME")
+	if aname == "" {
+		fatalf("OLLIE_UNAME not set")
 	}
+
+	fsys, err := mountWithAname(address, aname)
 	if err != nil {
 		fatalf("dial %s: %v", address, err)
 	}