diff --git a/fission/function.go b/fission/function.go
index e54e0a00..3749d746 100644
--- a/fission/function.go
+++ b/fission/function.go
@@ -54,6 +54,9 @@ func fnGet(c *cli.Context) error {
 	client := getClient(c.GlobalString("server"))
 
 	fnName := c.String("name")
+	if len(fnName) == 0 {
+		fatal("Need name of function, use --name")
+	}
 	fnUid := c.String("uid")
 	m := &fission.Metadata{Name: fnName, Uid: fnUid}