diff --git a/README.md b/README.md
index 1798cf6..509574f 100644
--- a/README.md
+++ b/README.md
@@ -161,7 +161,6 @@ const paginateConfig: PaginateConfig<CatEntity> {
   /**
    * Required: false
    * Type: 'first' | 'last'
-   * Default: 'first'
    * Description: (ONLY WORKS WITH POSTGRES) Define whether to put null values
    * at the beginning or end of the result set.
    */
diff --git a/src/paginate.spec.ts b/src/paginate.spec.ts
index 3cb919c..804954a 100644
--- a/src/paginate.spec.ts
+++ b/src/paginate.spec.ts
@@ -425,23 +425,6 @@ describe('paginate', () => {
         expect(result.data).toStrictEqual(expectedResult)
     })
 
-    it('should put null values first when nullSort is not specified', async () => {
-        const config: PaginateConfig<CatEntity> = {
-            sortableColumns: ['age', 'createdAt'],
-            defaultSortBy: [['age', 'ASC']],
-        }
-        const query: PaginateQuery = {
-            path: '',
-        }
-
-        const result = await paginate<CatEntity>(query, catRepo, config)
-
-        const expectedCats = cats.slice()
-
-        expect(result.meta.sortBy).toStrictEqual([['age', 'ASC']])
-        expect(result.data).toStrictEqual(expectedCats.reverse())
-    })
-
     it('should sort result by multiple columns', async () => {
         const config: PaginateConfig<CatEntity> = {
             sortableColumns: ['name', 'color'],
diff --git a/src/paginate.ts b/src/paginate.ts
index fa162b0..c55563e 100644
--- a/src/paginate.ts
+++ b/src/paginate.ts
@@ -100,8 +100,6 @@ export async function paginate<T extends ObjectLiteral>(
 
     const queryBuilder = repo instanceof Repository ? repo.createQueryBuilder('__root') : repo
 
-    const isPostgres = ['postgres', 'cockroachdb'].includes(queryBuilder.connection.options.type)
-
     if (repo instanceof Repository && !config.relations && config.loadEagerRelations === true) {
         if (!config.relations) {
             FindOptionsUtils.joinEagerRelations(queryBuilder, queryBuilder.alias, repo.metadata)
@@ -143,7 +141,7 @@ export async function paginate<T extends ObjectLiteral>(
         }
     }
 
-    let nullSort: 'NULLS LAST' | 'NULLS FIRST' | undefined = isPostgres ? 'NULLS FIRST' : undefined
+    let nullSort: 'NULLS LAST' | 'NULLS FIRST' | undefined = undefined
     if (config.nullSort) {
         nullSort = config.nullSort === 'last' ? 'NULLS LAST' : 'NULLS FIRST'
     }
@@ -238,7 +236,7 @@ export async function paginate<T extends ObjectLiteral>(
                         parameters: [alias, `:${property.column}`],
                     }
 
-                    if (isPostgres) {
+                    if (['postgres', 'cockroachdb'].includes(queryBuilder.connection.options.type)) {
                         condition.parameters[0] = `CAST(${condition.parameters[0]} AS text)`
                     }