diff --git a/readme.md b/readme.md
index 21ad493..01a81ae 100644
--- a/readme.md
+++ b/readme.md
@@ -132,7 +132,7 @@ The following predicates are available on every type.
 
 #### not
 
-Inverts the following predicates.
+Inverts the following predicate.
 
 ```ts
 ow(1, ow.number.not.infinite);
diff --git a/source/lib/operators/not.ts b/source/lib/operators/not.ts
index 1513ddb..2c9f79a 100644
--- a/source/lib/operators/not.ts
+++ b/source/lib/operators/not.ts
@@ -1,12 +1,14 @@
 import {Predicate, validatorSymbol} from '../predicates/predicate';
 
 /**
- * Operator which inverts all the validations.
+ * Operator which inverts the following validation.
  *
  * @hidden
  * @param predictate Predicate to wrap inside the operator.
  */
 export const not = <T, P extends Predicate<T>>(predicate: P) => {
+	const originalAddValidator = predicate.addValidator;
+
 	predicate.addValidator = validator => {
 		const fn = validator.validator;
 		const message = validator.message;
@@ -16,6 +18,8 @@ export const not = <T, P extends Predicate<T>>(predicate: P) => {
 
 		predicate[validatorSymbol].push(validator);
 
+		predicate.addValidator = originalAddValidator;
+
 		return predicate;
 	};
 
diff --git a/source/test/test.ts b/source/test/test.ts
index a742b4d..fa3844c 100644
--- a/source/test/test.ts
+++ b/source/test/test.ts
@@ -2,12 +2,13 @@ import test from 'ava';
 import m from '..';
 
 test('not', t => {
+	t.notThrows(() => m('foo!', m.string.not.alphanumeric));
 	t.notThrows(() => m(1, m.number.not.infinite));
-	t.notThrows(() => m(1, m.number.not.infinite.greaterThan(5)));
+	t.notThrows(() => m(1, m.number.not.infinite.not.greaterThan(5)));
+	t.throws(() => m(6, m.number.not.infinite.not.greaterThan(5)));
 	t.notThrows(() => m('foo!', m.string.not.alphabetical));
 	t.notThrows(() => m('foo!', m.string.not.alphanumeric));
 	t.notThrows(() => m('foo!', m.string.label('foo').not.alphanumeric));
-	t.notThrows(() => m('foo!', m.string.not.label('foo').alphanumeric));
 	t.notThrows(() => m('foo!', m.string.not.alphanumeric.label('foo')));
 	t.notThrows(() => m('FOO!', m.string.not.lowercase));
 	t.notThrows(() => m('foo!', m.string.not.uppercase));