diff --git a/lib/content-services/search/components/search-number-range/search-number-range.component.spec.ts b/lib/content-services/search/components/search-number-range/search-number-range.component.spec.ts
index e1fa4bf996..11e3fda0b9 100644
--- a/lib/content-services/search/components/search-number-range/search-number-range.component.spec.ts
+++ b/lib/content-services/search/components/search-number-range/search-number-range.component.spec.ts
@@ -16,6 +16,7 @@
  */
 
 import { SearchNumberRangeComponent } from './search-number-range.component';
+import { FormControl, FormGroup } from '@angular/forms';
 
 describe('SearchNumberRangeComponent', () => {
 
@@ -124,4 +125,15 @@ describe('SearchNumberRangeComponent', () => {
         expect(context.queryFragments['range1']).toEqual('cm:content.size:<0 TO 100>');
     });
 
+    it('should return true if TO value is bigger than FROM value', () => {
+        component.ngOnInit();
+        component.from = new FormControl('10');
+        component.to = new FormControl('20');
+        component.form = new FormGroup({
+            from: component.from,
+            to: component.to
+        }, component.formValidator);
+
+        expect(component.formValidator).toBeTruthy();
+    });
 });
diff --git a/lib/content-services/search/components/search-number-range/search-number-range.component.ts b/lib/content-services/search/components/search-number-range/search-number-range.component.ts
index c997e76105..db2decb212 100644
--- a/lib/content-services/search/components/search-number-range/search-number-range.component.ts
+++ b/lib/content-services/search/components/search-number-range/search-number-range.component.ts
@@ -62,7 +62,11 @@ export class SearchNumberRangeComponent implements SearchWidget, OnInit {
         this.form = new FormGroup({
             from: this.from,
             to: this.to
-        });
+        }, this.formValidator);
+    }
+
+    formValidator(formGroup: FormGroup) {
+        return parseInt(formGroup.get('from').value, 10) < parseInt(formGroup.get('to').value, 10) ? null : {'mismatch': true};
     }
 
     apply(model: { from: string, to: string }, isValid: boolean) {