diff --git a/CHANGELOG.md b/CHANGELOG.md
index ca6f2a59d..07dbd4fea 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -53,7 +53,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Improvements
 
-- [#767](https://github.com/alleslabs/celatone-frontend/pull/767) Add test validation for Fee.ts
+- [#768](https://github.com/alleslabs/celatone-frontend/pull/768) Add unit test for truncate.test.ts
+- [#767](https://github.com/alleslabs/celatone-frontend/pull/767) Add unit test for fee.test.ts
 - [#756](https://github.com/alleslabs/celatone-frontend/pull/756) Redirect usei to homepage
 - [#750](https://github.com/alleslabs/celatone-frontend/pull/750) api v1 - recent codes list
 - [#752](https://github.com/alleslabs/celatone-frontend/pull/752) Support contract state's key as base64
diff --git a/src/lib/utils/truncate.test.ts b/src/lib/utils/truncate.test.ts
new file mode 100644
index 000000000..410d3b897
--- /dev/null
+++ b/src/lib/utils/truncate.test.ts
@@ -0,0 +1,18 @@
+import { truncate } from "./truncate";
+
+describe("truncate validation", () => {
+  test("standard case", () => {
+    const result = truncate("osmo102cykl9ng6m9e7ytku25r632shfdk3ux4eayz4");
+
+    expect(result).toBe("osmo10...4eayz4");
+  });
+
+  test("custom head and tail length", () => {
+    const result = truncate(
+      "osmo102cykl9ng6m9e7ytku25r632shfdk3ux4eayz4",
+      [10, 4]
+    );
+
+    expect(result).toBe("osmo102cyk...ayz4");
+  });
+});