diff --git a/_search-plugins/sql/ppl/functions.md b/_search-plugins/sql/ppl/functions.md
index 49a546e50a..c746ad23ca 100644
--- a/_search-plugins/sql/ppl/functions.md
+++ b/_search-plugins/sql/ppl/functions.md
@@ -760,7 +760,7 @@ The example shows how to classify three Iris species (Iris setosa, Iris virginic
 PPL query:
 
 ```sql
-os> source=iris_data | fields sepal_length_in_cm, sepal_width_in_cm, petal_length_in_cm, petal_width_in_cm | kmeans 3
+os> source=iris_data | fields sepal_length_in_cm, sepal_width_in_cm, petal_length_in_cm, petal_width_in_cm | kmeans centroids=3
 ```
 
 sepal_length_in_cm | sepal_width_in_cm | petal_length_in_cm | petal_width_in_cm | ClusterID