diff --git a/x-pack/plugin/esql/src/main/java/org/elasticsearch/xpack/esql/expression/function/grouping/Categorize.java b/x-pack/plugin/esql/src/main/java/org/elasticsearch/xpack/esql/expression/function/grouping/Categorize.java
index 9593a3af2a9f..e2c04ecb15b5 100644
--- a/x-pack/plugin/esql/src/main/java/org/elasticsearch/xpack/esql/expression/function/grouping/Categorize.java
+++ b/x-pack/plugin/esql/src/main/java/org/elasticsearch/xpack/esql/expression/function/grouping/Categorize.java
@@ -53,7 +53,7 @@ public class Categorize extends GroupingFunction implements Validatable {
 
             * can't be used within other expressions
             * can't be used with multiple groupings
-            * can't be used or referenced within aggregations""",
+            * can't be used or referenced within aggregate functions""",
         examples = {
             @Example(
                 file = "docs",