diff --git a/lib/jasmine-core/boot.js b/lib/jasmine-core/boot.js
index aec7ed6d..9dce2ab1 100644
--- a/lib/jasmine-core/boot.js
+++ b/lib/jasmine-core/boot.js
@@ -69,6 +69,11 @@ WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
     },
 
     clock: env.clock,
+
+    addCustomEqualityTester: function(tester) {
+      env.addCustomEqualityTester(tester);
+    },
+
     jsApiReporter: new jasmine.JsApiReporter({
       timer: new jasmine.Timer()
     })
diff --git a/spec/support/dev_boot.js b/spec/support/dev_boot.js
index 83e5eed0..b09f0318 100644
--- a/spec/support/dev_boot.js
+++ b/spec/support/dev_boot.js
@@ -48,6 +48,11 @@
     },
 
     clock: env.clock,
+
+    addCustomEqualityTester: function(tester) {
+      env.addCustomEqualityTester(tester);
+    },
+
     jsApiReporter: new jasmine.JsApiReporter({
       timer: new jasmine.Timer()
     })