diff --git a/README.md b/README.md
index 68b98cb8a7..eb7d823424 100644
--- a/README.md
+++ b/README.md
@@ -9,7 +9,7 @@ The tool dispatches and runs trial jobs that generated by tuning algorithms to s
 │ nnictl │ ─────> │  nni_manager           │                  │ Local Machine  │
 └────────┘        │    sdk/tuner           │                  └────────────────┘
                   │      hyperopt_tuner    │
-                  │      evolution_tuner   │    trail jobs    ┌────────────────┐
+                  │      evolution_tuner   │    trial jobs    ┌────────────────┐
                   │      ...               │     ────────>    │ Remote Servers │          
                   ├────────────────────────┤                  └────────────────┘
                   │  trial job source code │