diff --git a/packages/optimizely-sdk/lib/index.browser.js b/packages/optimizely-sdk/lib/index.browser.js
index cde323a96..458ef532b 100644
--- a/packages/optimizely-sdk/lib/index.browser.js
+++ b/packages/optimizely-sdk/lib/index.browser.js
@@ -85,18 +85,26 @@ module.exports = {
         config.skipJSONValidation = true;
       }
 
-      var wrappedEventDispatcher = new eventProcessor.LocalStoragePendingEventsDispatcher({
-        eventDispatcher: config.eventDispatcher || defaultEventDispatcher,
-      });
-      if (!hasRetriedEvents) {
-        wrappedEventDispatcher.sendPendingEvents();
-        hasRetriedEvents = true;
+      var eventDispatcher;
+      // prettier-ignore
+      if (config.eventDispatcher == null) { // eslint-disable-line eqeqeq
+        // only wrap the event dispatcher with pending events retry if the user didnt override
+        eventDispatcher = new eventProcessor.LocalStoragePendingEventsDispatcher({
+          eventDispatcher: defaultEventDispatcher,
+        });
+
+        if (!hasRetriedEvents) {
+          eventDispatcher.sendPendingEvents();
+          hasRetriedEvents = true;
+        }
+      } else {
+        eventDispatcher = config.eventDispatcher;
       }
 
       config = fns.assignIn({
         clientEngine: enums.JAVASCRIPT_CLIENT_ENGINE,
       }, config, {
-        eventDispatcher: wrappedEventDispatcher,
+        eventDispatcher: eventDispatcher,
         // always get the OptimizelyLogger facade from logging
         logger: logger,
         errorHandler: logging.getErrorHandler(),
diff --git a/packages/optimizely-sdk/lib/index.browser.tests.js b/packages/optimizely-sdk/lib/index.browser.tests.js
index f35b8225c..24fefbacb 100644
--- a/packages/optimizely-sdk/lib/index.browser.tests.js
+++ b/packages/optimizely-sdk/lib/index.browser.tests.js
@@ -62,7 +62,7 @@ describe('javascript-sdk', function() {
           requests.push(req);
         };
 
-        sinon.spy(LocalStoragePendingEventsDispatcher.prototype, 'sendPendingEvents');
+        sinon.stub(LocalStoragePendingEventsDispatcher.prototype, 'sendPendingEvents');
       });
 
       afterEach(function() {
@@ -73,11 +73,39 @@ describe('javascript-sdk', function() {
         xhr.restore();
       });
 
+      describe('when an eventDispatcher is not passed in', function() {
+        it('should wrap the default eventDispatcher and invoke sendPendingEvents', function() {
+          var optlyInstance = optimizelyFactory.createInstance({
+            datafile: {},
+            errorHandler: fakeErrorHandler,
+            logger: silentLogger,
+          });
+          // Invalid datafile causes onReady Promise rejection - catch this error
+          optlyInstance.onReady().catch(function() {});
+
+          sinon.assert.calledOnce(LocalStoragePendingEventsDispatcher.prototype.sendPendingEvents);
+        });
+      });
+
+      describe('when an eventDispatcher is passed in', function() {
+        it('should NOT wrap the default eventDispatcher and invoke sendPendingEvents', function() {
+          var optlyInstance = optimizelyFactory.createInstance({
+            datafile: {},
+            errorHandler: fakeErrorHandler,
+            eventDispatcher: fakeEventDispatcher,
+            logger: silentLogger,
+          });
+          // Invalid datafile causes onReady Promise rejection - catch this error
+          optlyInstance.onReady().catch(function() {});
+
+          sinon.assert.notCalled(LocalStoragePendingEventsDispatcher.prototype.sendPendingEvents);
+        });
+      });
+
       it('should invoke resendPendingEvents at most once', function() {
         var optlyInstance = optimizelyFactory.createInstance({
           datafile: {},
           errorHandler: fakeErrorHandler,
-          eventDispatcher: fakeEventDispatcher,
           logger: silentLogger,
         });
         // Invalid datafile causes onReady Promise rejection - catch this error
@@ -88,7 +116,6 @@ describe('javascript-sdk', function() {
         optlyInstance = optimizelyFactory.createInstance({
           datafile: {},
           errorHandler: fakeErrorHandler,
-          eventDispatcher: fakeEventDispatcher,
           logger: silentLogger,
         });
         optlyInstance.onReady().catch(function() {});