diff --git a/source/index.ts b/source/index.ts
index c6aeea2..a3defd5 100644
--- a/source/index.ts
+++ b/source/index.ts
@@ -137,7 +137,6 @@ namespace is { // tslint:disable-line:no-namespace
 	export const nullOrUndefined = (value: any): value is null | undefined => null_(value) || undefined(value);
 	export const object = (value: any): value is object => !nullOrUndefined(value) && (function_(value) || isObject(value));
 	export const iterable = (value: any): value is IterableIterator<any> => !nullOrUndefined(value) && function_(value[Symbol.iterator]);
-	export const asyncIterable = (value: any): value is AsyncIterableIterator<any> => !nullOrUndefined(value) && function_(value[Symbol.asyncIterator]);
 	export const generator = (value: any): value is Generator => iterable(value) && function_(value.next) && function_(value.throw);
 
 	export const nativePromise = (value: any): value is Promise<any> =>
diff --git a/source/tests/test.ts b/source/tests/test.ts
index 92897e0..1f6a182 100644
--- a/source/tests/test.ts
+++ b/source/tests/test.ts
@@ -11,7 +11,6 @@ import ZenObservable from 'zen-observable';
 import m from '..';
 
 const isNode8orHigher = Number(process.versions.node.split('.')[0]) >= 8;
-const isNode10orHigher = Number(process.versions.node.split('.')[0]) >= 10;
 
 class PromiseSubclassFixture<T> extends Promise<T> {}
 class ErrorSubclassFixture extends Error {}
@@ -615,21 +614,6 @@ test('is.iterable', t => {
 	t.false(m.iterable({}));
 });
 
-if (isNode10orHigher) {
-	test('is.asyncIterable', t => {
-		t.true(m.asyncIterable({
-			[Symbol.asyncIterator]: () => {} // tslint:disable-line:no-empty
-		}));
-
-		t.false(m.asyncIterable(null));
-		t.false(m.asyncIterable(undefined));
-		t.false(m.asyncIterable(0));
-		t.false(m.asyncIterable(NaN));
-		t.false(m.asyncIterable(Infinity));
-		t.false(m.asyncIterable({}));
-	});
-}
-
 test('is.class', t => {
 	class Foo {} // tslint:disable-line
 	const classDeclarations = [