diff --git a/packages/algorithm/tests/src/retro.spec.ts b/packages/algorithm/tests/src/retro.spec.ts
index 205835682..8c98455bc 100644
--- a/packages/algorithm/tests/src/retro.spec.ts
+++ b/packages/algorithm/tests/src/retro.spec.ts
@@ -24,11 +24,11 @@ describe('@lumino/algorithm', () => {
       let retroable = { retro: () => iterator };
       expect(retro(retroable)).to.equal(iterator);
     });
-  });
 
-  describe('retro()', () => {
-    testIterator(() => {
-      return [retro([1, 2, 3]), [3, 2, 1]];
+    it('should reverse an array', () => {
+      testIterator(() => {
+        return [retro([1, 2, 3]), [3, 2, 1]];
+      });
     });
   });
 });
diff --git a/packages/algorithm/tests/src/take.spec.ts b/packages/algorithm/tests/src/take.spec.ts
index 8295ef7cb..83a3828c7 100644
--- a/packages/algorithm/tests/src/take.spec.ts
+++ b/packages/algorithm/tests/src/take.spec.ts
@@ -12,13 +12,13 @@ import { take } from '@lumino/algorithm';
 import { testIterator } from './iter.spec';
 
 describe('@lumino/algorithm', () => {
-  describe('take()', () => {
+  describe('take() from an array', () => {
     testIterator(() => {
       return [take([1, 2, 3, 4, 5], 2), [1, 2]];
     });
   });
 
-  describe('take()', () => {
+  describe('take() from an iterable iterator', () => {
     testIterator(() => {
       return [take([0, 1, 2, 3][Symbol.iterator](), 1), [0]];
     });