diff --git a/docs_app/content/guide/operators.md b/docs_app/content/guide/operators.md
index bfc578bc51..668bffddab 100644
--- a/docs_app/content/guide/operators.md
+++ b/docs_app/content/guide/operators.md
@@ -50,7 +50,7 @@ obs.pipe(
   op1(),
   op2(),
   op3(),
-  op3(),
+  op4()
 )
 ```