diff --git a/lib/jasmine-core/jasmine.js b/lib/jasmine-core/jasmine.js
index 88a8b3e6..ca6d8f14 100644
--- a/lib/jasmine-core/jasmine.js
+++ b/lib/jasmine-core/jasmine.js
@@ -2193,6 +2193,8 @@ getJasmineRequireObj().JsApiReporter = function(j$) {
 };
 
 getJasmineRequireObj().AllOf = function(j$) {
+  'use strict';
+
   function AllOf() {
     const expectedValues = Array.from(arguments);
     if (expectedValues.length === 0) {
diff --git a/src/core/asymmetric_equality/AllOf.js b/src/core/asymmetric_equality/AllOf.js
index db67a947..7a6bb3e7 100644
--- a/src/core/asymmetric_equality/AllOf.js
+++ b/src/core/asymmetric_equality/AllOf.js
@@ -1,4 +1,6 @@
 getJasmineRequireObj().AllOf = function(j$) {
+  'use strict';
+
   function AllOf() {
     const expectedValues = Array.from(arguments);
     if (expectedValues.length === 0) {