diff --git a/subjects/tron/tron.en.md b/subjects/tron/tron.en.md
index 4a18bda0..33aeecad 100644
--- a/subjects/tron/tron.en.md
+++ b/subjects/tron/tron.en.md
@@ -10,7 +10,7 @@ You will need to create a public repository with the name `tron`. Next you need
 
 ### Controls
 
-- `arrows` or `scroll` to move step by stem
+- `arrows` or `scroll` to move step by step
 - `shift` will make it fast
 - you can click anywhere on the progress bar to seek into the history