diff --git a/src/tui/theme/theme.test.ts b/src/tui/theme/theme.test.ts
index 8bef3b19b..c466241af 100644
--- a/src/tui/theme/theme.test.ts
+++ b/src/tui/theme/theme.test.ts
@@ -7,7 +7,7 @@ const cliHighlightMocks = vi.hoisted(() => ({
 
 vi.mock("cli-highlight", () => cliHighlightMocks);
 
-const { markdownTheme } = await import("./theme.js");
+const { markdownTheme, theme } = await import("./theme.js");
 
 const stripAnsi = (str: string) =>
   str.replace(new RegExp(`${String.fromCharCode(27)}\\[[0-9;]*m`, "g"), "");
@@ -52,3 +52,10 @@ describe("markdownTheme", () => {
     });
   });
 });
+
+describe("theme", () => {
+  it("keeps assistant text in terminal default foreground", () => {
+    expect(theme.assistantText("hello")).toBe("hello");
+    expect(stripAnsi(theme.assistantText("hello"))).toBe("hello");
+  });
+});