diff --git a/README.md b/README.md
index 1706c4a..ea289b9 100644
--- a/README.md
+++ b/README.md
@@ -151,7 +151,7 @@ const sortedByComparator = sort(setA, comparatorFunction);
 ```
 
 
-[npm-image]: http://img.shields.io/npm/v/set-utilities
+[npm-image]: https://img.shields.io/npm/v/set-utilities
 [npm-url]: https://www.npmjs.org/package/set-utilities
 
 [license-image]: https://img.shields.io/npm/l/set-utilities?color=blue
diff --git a/test/comparisons/proper-subset.function.test.ts b/test/comparisons/proper-subset.function.test.ts
index 6cf8260..33128b1 100644
--- a/test/comparisons/proper-subset.function.test.ts
+++ b/test/comparisons/proper-subset.function.test.ts
@@ -1,6 +1,6 @@
 import { describe, expect, it } from '@jest/globals';
 import { properSubset } from '../../src';
-import {empty, minimal, setA, setB, setC, setD, universal} from '../constants/testing-constants';
+import { empty, minimal, setA, setB, setC, setD, universal } from '../constants/testing-constants';
 
 describe('proper subset', () => {
 	it('no sets are proper subsets', () => {
diff --git a/test/comparisons/superset.function.test.ts b/test/comparisons/superset.function.test.ts
index 749b434..d4402e5 100644
--- a/test/comparisons/superset.function.test.ts
+++ b/test/comparisons/superset.function.test.ts
@@ -1,6 +1,6 @@
 import { describe, expect, it } from '@jest/globals';
-import {subset, superset} from '../../src';
-import {empty, minimal, setA, setB, setC, setD, universal} from '../constants/testing-constants';
+import { superset } from '../../src';
+import { empty, minimal, setA, setB, setC, setD, universal } from '../constants/testing-constants';
 
 describe('superset', () => {
 	it('no sets are superset', () => {
@@ -38,7 +38,7 @@ describe('superset', () => {
 	});
 
 	it('sets without value bijection are not supersets', () => {
-		expect(subset(setA, setD)).toBe(false);
+		expect(superset(setA, setD)).toBe(false);
 	});
 
 	it('any set is a superset of the empty set', () => {