diff --git a/mainloop/README.md b/mainloop/README.md
index 4c46ef4..5dea59b 100644
--- a/mainloop/README.md
+++ b/mainloop/README.md
@@ -1,3 +1,5 @@
 
-## Drafts around UAV sys
+## Drafts around UAV system
  
+UAV - unmanned aircraft velocity
+