diff --git a/projects/ngx-datatable/src/lib/components/datatable.component.ts b/projects/ngx-datatable/src/lib/components/datatable.component.ts
index c4bc8865d..5152a99c6 100644
--- a/projects/ngx-datatable/src/lib/components/datatable.component.ts
+++ b/projects/ngx-datatable/src/lib/components/datatable.component.ts
@@ -802,7 +802,7 @@ export class DatatableComponent implements OnInit, DoCheck, AfterViewInit, After
    * Creates a map with the data grouped by the user choice of grouping index
    *
    * @param originalArray the original array passed via parameter
-   * @param groupByIndex  the index of the column to group the data by
+   * @param groupBy  the index of the column to group the data by
    */
   groupArrayBy(originalArray: any, groupBy: any) {
     // create a map to hold groups with their corresponding results