diff --git a/Submission Tutorial.md b/Submission Tutorial.md
index aec69da..ea7cfd1 100644
--- a/Submission Tutorial.md	
+++ b/Submission Tutorial.md	
@@ -50,7 +50,7 @@ For running of your model, you should package the environment of your model into
   {
     "dev-0": "Copper is a good thermal conductor.",
     "dev-1": "Abalone are one of the first food items taken by otters as they move into new habitat.",
-    "dev-3": "Deserts are arid environments."
+    "dev-2": "Deserts are arid environments."
   }
   ```