diff --git a/src/swagger/api-paginated-query.decorator.ts b/src/swagger/api-paginated-query.decorator.ts
index 122b85b..6f13996 100644
--- a/src/swagger/api-paginated-query.decorator.ts
+++ b/src/swagger/api-paginated-query.decorator.ts
@@ -20,9 +20,14 @@ export function SortBy(paginationConfig: PaginateConfig<any>) {
         ? paginationConfig.defaultSortBy.map(([col, order]) => `${col}:${order}`).join(',')
         : 'No default sorting specified, the result order is not guaranteed'
 
+    const sortBy = paginationConfig.sortableColumns.reduce((prev, curr) => {
+        return [...prev, `${curr}:ASC`, `${curr}:DESC`]
+    }, [])
+
     return ApiQuery({
         name: 'sortBy',
         isArray: true,
+        enum: sortBy,
         description: `Parameter to sort by.
       <p>To sort by multiple fields, just provide query param multiple types. The order in url defines an order of sorting</p>
       ${p('Format', 'fieldName:DIRECTION')}
diff --git a/src/swagger/pagination-docs.spec.ts b/src/swagger/pagination-docs.spec.ts
index 56fa4aa..3345a8b 100644
--- a/src/swagger/pagination-docs.spec.ts
+++ b/src/swagger/pagination-docs.spec.ts
@@ -97,6 +97,7 @@ describe('PaginatedEndpoint decorator', () => {
                     type: 'array',
                     items: {
                         type: 'string',
+                        enum: ['id:ASC', 'id:DESC'],
                     },
                 },
             },
@@ -204,6 +205,7 @@ describe('PaginatedEndpoint decorator', () => {
                     type: 'array',
                     items: {
                         type: 'string',
+                        enum: ['id:ASC', 'id:DESC'],
                     },
                 },
             },