diff --git a/app/assets/javascripts/pages/projects/forks/new/components/fork_form.vue b/app/assets/javascripts/pages/projects/forks/new/components/fork_form.vue
index 292a70cd69ad8ab9a5a81a4ba454401ea7668457..90b906268ba88f451548d8c9822dd4573469940b 100644
--- a/app/assets/javascripts/pages/projects/forks/new/components/fork_form.vue
+++ b/app/assets/javascripts/pages/projects/forks/new/components/fork_form.vue
@@ -111,9 +111,7 @@ export default {
           required: false,
           skipValidation: true,
         }),
-        visibility: initFormField({
-          value: this.projectVisibility,
-        }),
+        visibility: initFormField({ value: this.projectVisibility }),
       },
     };
     return {
@@ -165,12 +163,8 @@ export default {
   },
   watch: {
     // eslint-disable-next-line func-names
-    'form.fields.namespace.value': function (newVal) {
-      const { visibility } = newVal;
-
-      if (this.projectAllowedVisibility.includes(visibility)) {
-        this.form.fields.visibility.value = visibility;
-      }
+    'form.fields.namespace.value': function () {
+      this.form.fields.visibility.value = PRIVATE_VISIBILITY;
     },
     // eslint-disable-next-line func-names
     'form.fields.name.value': function (newVal) {
diff --git a/spec/frontend/pages/projects/forks/new/components/fork_form_spec.js b/spec/frontend/pages/projects/forks/new/components/fork_form_spec.js
index 79a0ab006dae61d33ee322e71b6179d2e49bb7bb..03338b1930c905465964f6168ca5e5f670bfcce7 100644
--- a/spec/frontend/pages/projects/forks/new/components/fork_form_spec.js
+++ b/spec/frontend/pages/projects/forks/new/components/fork_form_spec.js
@@ -1,4 +1,4 @@
-import { GlFormInputGroup, GlFormInput, GlForm, GlFormRadio } from '@gitlab/ui';
+import { GlFormInputGroup, GlFormInput, GlForm, GlFormRadio, GlFormSelect } from '@gitlab/ui';
 import { mount, shallowMount } from '@vue/test-utils';
 import axios from 'axios';
 import AxiosMockAdapter from 'axios-mock-adapter';
@@ -89,6 +89,7 @@ describe('ForkForm component', () => {
     axiosMock.restore();
   });
 
+  const findFormSelect = () => wrapper.find(GlFormSelect);
   const findPrivateRadio = () => wrapper.find('[data-testid="radio-private"]');
   const findInternalRadio = () => wrapper.find('[data-testid="radio-internal"]');
   const findPublicRadio = () => wrapper.find('[data-testid="radio-public"]');
@@ -229,6 +230,37 @@ describe('ForkForm component', () => {
       expect(wrapper.findAll(GlFormRadio)).toHaveLength(3);
     });
 
+    it('resets the visibility to default "private" when the namespace is changed', async () => {
+      const namespaces = [
+        {
+          visibility: 'private',
+        },
+        {
+          visibility: 'internal',
+        },
+        {
+          visibility: 'public',
+        },
+      ];
+
+      mockGetRequest();
+      createComponent(
+        {
+          projectVisibility: 'public',
+        },
+        {
+          namespaces,
+        },
+      );
+
+      expect(wrapper.vm.form.fields.visibility.value).toBe('public');
+      findFormSelect().vm.$emit('input', namespaces[1]);
+
+      await wrapper.vm.$nextTick();
+
+      expect(wrapper.vm.form.fields.visibility.value).toBe('private');
+    });
+
     it.each`
       project       | namespace     | privateIsDisabled | internalIsDisabled | publicIsDisabled
       ${'private'}  | ${'private'}  | ${undefined}      | ${'true'}          | ${'true'}
@@ -324,7 +356,6 @@ describe('ForkForm component', () => {
 
         await submitForm();
 
-        expect(wrapper.find('[name="visibility"]:checked').exists()).toBe(false);
         expect(axios.post).not.toHaveBeenCalled();
       });
     });