diff --git a/libs/components/forms/testing/src/radio/radio-group-harness.ts b/libs/components/forms/testing/src/radio/radio-group-harness.ts
index 211207ba6f..34bd547fbe 100644
--- a/libs/components/forms/testing/src/radio/radio-group-harness.ts
+++ b/libs/components/forms/testing/src/radio/radio-group-harness.ts
@@ -112,7 +112,14 @@ export class SkyRadioGroupHarness extends SkyComponentHarness {
    * Gets the help popover content.
    */
   public async getHelpPopoverContent(): Promise<string | undefined> {
-    return await (await this.#getHelpInline()).getPopoverContent();
+    const content = await (await this.#getHelpInline()).getPopoverContent();
+
+    /* istanbul ignore if */
+    if (typeof content === 'object') {
+      throw Error('Unexpected template ref');
+    }
+
+    return content;
   }
 
   /**
diff --git a/libs/components/forms/testing/src/radio/radio-harness.ts b/libs/components/forms/testing/src/radio/radio-harness.ts
index b8488cb8c0..ecfaee800b 100644
--- a/libs/components/forms/testing/src/radio/radio-harness.ts
+++ b/libs/components/forms/testing/src/radio/radio-harness.ts
@@ -86,7 +86,14 @@ export class SkyRadioHarness extends SkyComponentHarness {
    * Gets the help popover content.
    */
   public async getHelpPopoverContent(): Promise<string | undefined> {
-    return await (await this.#getHelpInline()).getPopoverContent();
+    const content = await (await this.#getHelpInline()).getPopoverContent();
+
+    /* istanbul ignore if */
+    if (typeof content === 'object') {
+      throw Error('Unexpected template ref');
+    }
+
+    return content;
   }
 
   /**
diff --git a/libs/components/help-inline/testing/src/help-inline/help-inline-harness.ts b/libs/components/help-inline/testing/src/help-inline/help-inline-harness.ts
index e2df6ecadb..4360f34544 100644
--- a/libs/components/help-inline/testing/src/help-inline/help-inline-harness.ts
+++ b/libs/components/help-inline/testing/src/help-inline/help-inline-harness.ts
@@ -1,4 +1,5 @@
 import { HarnessPredicate } from '@angular/cdk/testing';
+import { TemplateRef } from '@angular/core';
 import { SkyComponentHarness } from '@skyux/core/testing';
 import {
   SkyPopoverContentHarness,
@@ -104,7 +105,9 @@ export class SkyHelpInlineHarness extends SkyComponentHarness {
   /**
    * Gets the help popover content.
    */
-  public async getPopoverContent(): Promise<string | undefined> {
+  public async getPopoverContent(): Promise<
+    TemplateRef<unknown> | string | undefined
+  > {
     return (await this.#getPopoverHarnessContent())?.getBodyText();
   }