diff --git a/index.js b/index.js
index 045577f..6ee2179 100644
--- a/index.js
+++ b/index.js
@@ -7,7 +7,7 @@ const isOfType = type => x => typeof x === type; // eslint-disable-line valid-ty
 const isObjectOfType = type => x => getObjectType(x) === type;
 
 const is = value => {
-	if (value == null) { // eslint-disable-line no-eq-null, eqeqeq
+	if (value === null) {
 		return 'null';
 	}
 
diff --git a/test.js b/test.js
index b4b50e6..7fac42f 100644
--- a/test.js
+++ b/test.js
@@ -112,6 +112,13 @@ const testType = (t, type, exclude) => {
 	}
 };
 
+test('is', t => {
+	t.is(m(null), 'null');
+	t.is(m(undefined), 'undefined');
+
+	// TODO: Expand this to all the supported types. Maybe reuse `testType()` somehow.
+});
+
 test('is.undefined', t => {
 	testType(t, 'undefined', ['nullOrUndefined']);
 });