diff --git a/packages/material-ui/src/TablePagination/TablePagination.js b/packages/material-ui/src/TablePagination/TablePagination.js
index b5d69d5eb3a783..ff6fb32db97aee 100644
--- a/packages/material-ui/src/TablePagination/TablePagination.js
+++ b/packages/material-ui/src/TablePagination/TablePagination.js
@@ -128,7 +128,7 @@ const TablePagination = React.forwardRef(function TablePagination(props, ref) {
             {rowsPerPageOptions.map(rowsPerPageOption => (
               <MenuItemComponent
                 className={classes.menuItem}
-                key={rowsPerPageOption}
+                key={rowsPerPageOption.value ? rowsPerPageOption.value : rowsPerPageOption}
                 value={rowsPerPageOption.value ? rowsPerPageOption.value : rowsPerPageOption}
               >
                 {rowsPerPageOption.label ? rowsPerPageOption.label : rowsPerPageOption}