diff --git a/src/renderer/components/+preferences/__tests__/preferences.test.tsx b/src/renderer/components/+preferences/__tests__/preferences.test.tsx
index c4fc53d73f..9008a5e131 100644
--- a/src/renderer/components/+preferences/__tests__/preferences.test.tsx
+++ b/src/renderer/components/+preferences/__tests__/preferences.test.tsx
@@ -29,6 +29,46 @@ import { AppPreferenceRegistry } from "../../../../extensions/registries";
 import { computed } from "mobx";
 import { MemoryRouter } from "react-router-dom";
 import "@testing-library/jest-dom/extend-expect";
+import { LensExtension } from "../../../../extensions/lens-extension";
+
+const extension = {
+  id: "/absolute/path/test",
+  manifest: {
+    name: "@k8slens/test",
+    version: "1.2.3",
+  },
+  absolutePath: "/absolute/path",
+  manifestPath: "/symlinked/path/package.json",
+  isBundled: false,
+  isEnabled: true,
+  isCompatible: true,
+}
+
+const crdExtension = {
+  id: "/absolute/path/crd",
+  manifest: {
+    name: "@k8slens/crd-example",
+    version: "1.2.3",
+  },
+  absolutePath: "/absolute/path/crd",
+  manifestPath: "/symlinked/path/package.json",
+  isBundled: false,
+  isEnabled: true,
+  isCompatible: true,
+}
+
+const sampleExtension = {
+  id: "/absolute/path/sample",
+  manifest: {
+    name: "@k8slens/sample",
+    version: "1.2.3",
+  },
+  absolutePath: "/absolute/path/sample",
+  manifestPath: "/symlinked/path/package.json",
+  isBundled: false,
+  isEnabled: true,
+  isCompatible: true,
+}
 
 describe("Preferences", () => {
   let di: ConfigurableDependencyInjectionContainer;
@@ -39,25 +79,86 @@ describe("Preferences", () => {
     render = renderFor(di);
 
     AppPreferenceRegistry.createInstance();
+    AppPreferenceRegistry.getInstance().add([
+      {
+        components: {
+          Input: () => <div>input</div>,
+          Hint: () => <div>hint</div>
+        },
+        extensionId: "@k8slens/test",
+        id: "example-preferences",
+        title: "Example Preferences",
+      }
+    ], new LensExtension(extension));
+    AppPreferenceRegistry.getInstance().add([
+      {
+        components: {
+          Input: () => <div>crd input</div>,
+          Hint: () => <div>crd hint</div>
+        },
+        extensionId: "@k8slens/crd-example",
+        title: "Example Preferences",
+      }
+    ], new LensExtension(crdExtension));
+    AppPreferenceRegistry.getInstance().add([
+      {
+        components: {
+          Input: () => <div>sample input</div>,
+          Hint: () => <div>sample hint</div>
+        },
+        extensionId: "@k8slens/crd-example",
+        title: "Extension with duplicated name",
+      }
+    ], new LensExtension(crdExtension))
+  });
+
+  afterEach(() => {
+    AppPreferenceRegistry.resetInstance();
   });
 
   it("renders w/o errors", () => {
-    di.override(userExtensionsInjectable, () => {
-      return computed(() => [] as any);
-    });
-
     const { container } = render(<MemoryRouter><Preferences /></MemoryRouter>);
 
     expect(container).toBeInstanceOf(HTMLElement);
   });
 
-  it("doesn't render extension settings tabs if no extensions found", () => {
-    di.override(userExtensionsInjectable, () => {
-      return computed(() => [] as any);
+  describe("Extension custom settings", () => {
+    it("doesn't render custom settings tabs if no extensions found", () => {
+      const { queryByTestId } = render(<MemoryRouter><Preferences /></MemoryRouter>);
+
+      expect(queryByTestId("custom-settings")).not.toBeInTheDocument();
     });
 
-    const { queryByTestId } = render(<MemoryRouter><Preferences /></MemoryRouter>);
+    it("renders custom settings tabs if registered extensions found", () => {
+      di.override(userExtensionsInjectable, () => {
+        return computed(() => [extension]);
+      });
 
-    expect(queryByTestId("custom-settings")).not.toBeInTheDocument();
+      const { getByTestId } = render(<MemoryRouter><Preferences /></MemoryRouter>);
+
+      expect(getByTestId("custom-settings")).toBeInTheDocument();
+    })
+
+    it("renders tabs for each extension having custom settings", () => {
+      di.override(userExtensionsInjectable, () => {
+        return computed(() => [extension, crdExtension, sampleExtension]);
+      });
+
+      const { getByText, queryByText } = render(<MemoryRouter><Preferences /></MemoryRouter>);
+
+      expect(getByText("@k8slens/test")).toBeInTheDocument();
+      expect(getByText("@k8slens/crd-example")).toBeInTheDocument();
+      expect(queryByText("@k8slens/sample")).not.toBeInTheDocument();
+    });
+
+    it("renders extension tab only once", () => {
+      di.override(userExtensionsInjectable, () => {
+        return computed(() => [crdExtension]);
+      });
+
+      const { getAllByText } = render(<MemoryRouter><Preferences /></MemoryRouter>);
+
+      expect(getAllByText("@k8slens/crd-example").length).toBe(1);
+    })
   });
 });
diff --git a/src/renderer/components/+preferences/extension-settings-page.tsx b/src/renderer/components/+preferences/extension-settings-page.tsx
index 38836da0b0..469a2daddc 100644
--- a/src/renderer/components/+preferences/extension-settings-page.tsx
+++ b/src/renderer/components/+preferences/extension-settings-page.tsx
@@ -19,7 +19,6 @@
  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  */
 
-import { observer } from "mobx-react";
 import React from "react";
 import { matchPath, RouteComponentProps } from "react-router";
 import { extensionSettingsRoute } from "../../../common/routes";
@@ -29,13 +28,13 @@ import { ExtensionSettings } from "./extension-settings";
 interface Props extends RouteComponentProps<{ extensionId?: string }> {
 }
 
-export const ExtensionSettingsPage = observer((props: Props) => {
+export const ExtensionSettingsPage = (props: Props) => {
   // https://github.com/remix-run/react-router/issues/5870#issuecomment-394194338
   const match = matchPath<{ extensionId: string }>(props.history.location.pathname, {
     path: extensionSettingsRoute.path,
     exact: true,
   });
-  const extensionId = decodeURIComponent(match.params.extensionId);
+  const extensionId = decodeURIComponent(match?.params?.extensionId);
   const settings = AppPreferenceRegistry.getInstance().getItems();
   const currentSettings = settings.filter(setting => setting.extensionId == extensionId);
 
@@ -57,4 +56,4 @@ export const ExtensionSettingsPage = observer((props: Props) => {
       {renderContent()}
     </section>
   );
-});
+};
diff --git a/src/renderer/components/+preferences/preferences.tsx b/src/renderer/components/+preferences/preferences.tsx
index d1bd6b9eed..1f8a023891 100644
--- a/src/renderer/components/+preferences/preferences.tsx
+++ b/src/renderer/components/+preferences/preferences.tsx
@@ -48,13 +48,13 @@ import { Kubernetes } from "./kubernetes";
 import { Editor } from "./editor";
 import { LensProxy } from "./proxy";
 import { Telemetry } from "./telemetry";
-import { Extensions } from "./extensions";
 import { sentryDsn } from "../../../common/vars";
 import { withInjectables } from "@ogre-tools/injectable-react";
 import type { InstalledExtension } from "../../../extensions/extension-discovery";
 import userExtensionsInjectable from "../+extensions/user-extensions/user-extensions.injectable";
 import { ExtensionSettingsPage } from "./extension-settings-page";
 import { Icon } from "../icon";
+import { uniqBy } from "lodash";
 
 interface Dependencies {
   userExtensions: IComputedValue<InstalledExtension[]>;
@@ -70,11 +70,11 @@ class Preferences extends React.Component<Dependencies> {
   }
 
   renderNavigation() {
-    const preferenceRegistries = AppPreferenceRegistry.getInstance().getItems();
+    const preferenceRegistries = uniqBy(AppPreferenceRegistry.getInstance().getItems(), "extensionId");
     const telemetryExtensions = preferenceRegistries.filter(e => e.showInPreferencesTab == "telemetry");
     const currentLocation = navigation.location.pathname;
     const isActive = (route: RouteProps) => !!matchPath(currentLocation, { path: route.path, exact: route.exact });
-    const extensions = this.props.userExtensions.get().filter(extension =>
+    const extensionsWithSettings = this.props.userExtensions.get().filter(extension =>
       preferenceRegistries.some(registry => registry.extensionId.includes(extension.manifest.name) && !registry.showInPreferencesTab),
     );
 
@@ -93,12 +93,12 @@ class Preferences extends React.Component<Dependencies> {
         {preferenceRegistries.filter(e => !e.showInPreferencesTab).length > 0 &&
           <Tab value={extensionURL()} label="Extensions" data-testid="extensions-tab" active={isActive(extensionRoute)}/>
         }
-        {extensions.length > 0 && (
+        {extensionsWithSettings.length > 0 && (
           <div data-testid="custom-settings">
             <hr/>
             <div className="header flex items-center"><Icon material="extension" smallest className="mr-3"/> Custom settings</div>
             <div>
-              {extensions.map(extension => (
+              {extensionsWithSettings.map(extension => (
                 <Tab key={extension.id} value={extensionSettingsURL({
                   params: {
                     extensionId: encodeURIComponent(extension.manifest.name),
@@ -125,7 +125,6 @@ class Preferences extends React.Component<Dependencies> {
           <Route path={kubernetesURL()} component={Kubernetes}/>
           <Route path={editorURL()} component={Editor}/>
           <Route path={telemetryURL()} component={Telemetry}/>
-          <Route path={extensionURL()} component={Extensions}/>
           <Route path={extensionSettingsURL()} component={ExtensionSettingsPage}/>
           <Redirect exact from={`${preferencesURL()}/`} to={appURL()}/>
         </Switch>