diff --git a/aio/content/guide/comparing-observables.md b/aio/content/guide/comparing-observables.md
index 7dd191ba955..227d364bcdd 100644
--- a/aio/content/guide/comparing-observables.md
+++ b/aio/content/guide/comparing-observables.md
@@ -59,7 +59,7 @@ Observables are often compared to promises. Here are some key differences:
 
   <code-example
     path="comparing-observables/src/observables.ts"
-    header="src/observables.ts (unsubcribe)"
+    header="src/observables.ts (unsubscribe)"
     region="unsubscribe">
   </code-example>