diff --git a/x-pack/plugins/timelines/public/components/t_grid/body/height_hack.ts b/x-pack/plugins/timelines/public/components/t_grid/body/height_hack.ts
index 26d32b13eede7..71f4623f0b600 100644
--- a/x-pack/plugins/timelines/public/components/t_grid/body/height_hack.ts
+++ b/x-pack/plugins/timelines/public/components/t_grid/body/height_hack.ts
@@ -51,7 +51,9 @@ export const useDataGridHeightHack = (pageSize: number, rowCount: number) => {
         setHeight(DATA_GRID_HEIGHT_BY_PAGE_SIZE[pageSize]);
       } else if (rowCount <= pageSize) {
         // This is unnecessary if we add rowCount > pageSize below
-        setHeight(dataGridRowHeight * rowCount + (headerSectionHeight + additionalFiltersHeight));
+        setHeight(
+          dataGridRowHeight * (rowCount + 1) + (headerSectionHeight + additionalFiltersHeight)
+        );
       } else if (
         // rowCount > pageSize && // This will fix the issue but is always full height so has a lot of empty state
         gridVirtualized &&