diff --git a/npm/ng-packs/packages/core/src/lib/pipes/sort.pipe.ts b/npm/ng-packs/packages/core/src/lib/pipes/sort.pipe.ts
index 9e7b5a0d10..ea23da1efc 100644
--- a/npm/ng-packs/packages/core/src/lib/pipes/sort.pipe.ts
+++ b/npm/ng-packs/packages/core/src/lib/pipes/sort.pipe.ts
@@ -7,21 +7,26 @@ export type SortOrder = 'asc' | 'desc';
 export class SortPipe implements PipeTransform {
   transform(value: any[], sortOrder: SortOrder | string = 'asc', sortKey?: string): any {
     sortOrder = sortOrder && (sortOrder.toLowerCase() as any);
+
     if (!value || (sortOrder !== 'asc' && sortOrder !== 'desc')) return value;
-    let sorted;
+
+    let numberArray = [];
+    let stringArray = [];
+
     if (!sortKey) {
-      const numberArray = [];
-      const stringArray = [];
-      value.forEach(item => (typeof item === 'number' ? numberArray.push(item) : stringArray.push(item)));
-      sorted = numberArray.sort().concat(stringArray.sort());
+      numberArray = value.filter(item => typeof item === 'number').sort();
+      stringArray = value.filter(item => typeof item === 'string').sort();
     } else {
-      sorted = value.sort((a, b) => {
-        return (
-          Number(typeof b[sortKey] === 'number') - Number(typeof a[sortKey] === 'number') ||
-          (a[sortKey] < b[sortKey] ? -1 : 1)
-        );
-      });
+      numberArray = value.filter(item => typeof item[sortKey] === 'number').sort((a, b) => a[sortKey] - b[sortKey]);
+      stringArray = value
+        .filter(item => typeof item[sortKey] === 'string')
+        .sort((a, b) => {
+          if (a[sortKey] < b[sortKey]) return -1;
+          else if (a[sortKey] > b[sortKey]) return 1;
+          else return 0;
+        });
     }
+    const sorted = numberArray.concat(stringArray);
     return sortOrder === 'asc' ? sorted : sorted.reverse();
   }
 }
diff --git a/npm/ng-packs/packages/core/src/lib/tests/sort.pipe.spec.ts b/npm/ng-packs/packages/core/src/lib/tests/sort.pipe.spec.ts
index 6b88961728..8428515118 100644
--- a/npm/ng-packs/packages/core/src/lib/tests/sort.pipe.spec.ts
+++ b/npm/ng-packs/packages/core/src/lib/tests/sort.pipe.spec.ts
@@ -1,4 +1,4 @@
-import { createServiceFactory, SpectatorService } from '@ngneat/spectator';
+import { createServiceFactory, SpectatorService } from '@ngneat/spectator/jest';
 import { SortPipe } from '../pipes/sort.pipe';
 
 describe('SortPipe', () => {
@@ -24,7 +24,7 @@ describe('SortPipe', () => {
   });
 
   test('should require an array as value', () => {
-    expect(pipe.transform(null, 'asc')).toBeFalsy();
+    expect(pipe.transform(null)).toBeFalsy();
     expect(pipe.transform(undefined, 'desc')).toBeFalsy();
   });
 });