diff --git a/src/utils.js b/src/utils.js
index 1f715be7..3368deae 100644
--- a/src/utils.js
+++ b/src/utils.js
@@ -133,7 +133,7 @@ var validateProperties = function validateProperties(properties) {
 };
 
 var invalidValueTypes = [
-  'null', 'nan', 'undefined', 'function', 'arguments', 'regexp', 'element'
+  'nan', 'undefined', 'function', 'arguments', 'regexp', 'element'
 ];
 
 var validatePropertyValue = function validatePropertyValue(key, value) {
@@ -150,11 +150,14 @@ var validatePropertyValue = function validatePropertyValue(key, value) {
     for (var i = 0; i < value.length; i++) {
       var element = value[i];
       var elemType = type(element);
-      if (elemType === 'array' || elemType === 'object') {
+      if (elemType === 'array') {
         log.warn('WARNING: Cannot have ' + elemType + ' nested in an array property value, skipping');
         continue;
+      } else if (elemType === 'object') {
+        arrayCopy.push(validateProperties(element));
+      } else {
+        arrayCopy.push(validatePropertyValue(key, element));
       }
-      arrayCopy.push(validatePropertyValue(key, element));
     }
     value = arrayCopy;
   } else if (valueType === 'object') {
diff --git a/test/amplitude-client.js b/test/amplitude-client.js
index 551a6b60..fa87ef09 100644
--- a/test/amplitude-client.js
+++ b/test/amplitude-client.js
@@ -575,9 +575,9 @@ describe('AmplitudeClient', function() {
         'bool': true,
         'string': 'test',
         'array': [0, 1, 2, '3'],
-        'nested_array': ['a'],
+        'nested_array': ['a', {'key':'value'}],
         'object': {'key':'value'},
-        'nested_object': {'k':'v', 'l':[0,1], 'o':{'k2':'v2', 'l2': ['e2']}}
+        'nested_object': {'k':'v', 'l':[0,1], 'o':{'k2':'v2', 'l2': ['e2', {'k3':'v3'}]}}
       }
 
       // check that event loaded into memory
@@ -604,9 +604,9 @@ describe('AmplitudeClient', function() {
         'bool': true,
         'string': 'test',
         'array': [0, 1, 2, '3'],
-        'nested_array': ['a'],
+        'nested_array': ['a', {'key':'value'}],
         'object': {'key':'value'},
-        'nested_object': {'k':'v', 'l':[0,1], 'o':{'k2':'v2', 'l2': ['e2']}}
+        'nested_object': {'k':'v', 'l':[0,1], 'o':{'k2':'v2', 'l2': ['e2', {'k3':'v3'}]}}
       }
 
       // check that event loaded into memory
@@ -710,7 +710,7 @@ it ('should load saved events from localStorage new keys and send events', funct
         'bool': true,
         'string': 'test',
         'array': [0, 1, 2, '3'],
-        'nested_array': ['a'],
+        'nested_array': ['a', {'key':'value'}],
         'object': {
           'key': 'value'
         },
@@ -719,7 +719,7 @@ it ('should load saved events from localStorage new keys and send events', funct
           'l': [0, 1],
           'o': {
               'k2': 'v2',
-              'l2': ['e2']
+              'l2': ['e2', {'k3':'v3'}]
           }
         }
       }
@@ -2348,9 +2348,9 @@ describe('setVersionName', function() {
         'error': 'Error: oops',
         'string': 'test',
         'array': [0, 1, 2, '3'],
-        'nested_array': ['a'],
+        'nested_array': ['a', {'key': 'value'}],
         'object': {'key':'value', '15':'Error: oops'},
-        'nested_object': {'k':'v', 'l':[0,1], 'o':{'k2':'v2', 'l2': ['e2']}}
+        'nested_object': {'k':'v', 'l':[0,1], 'o':{'k2':'v2', 'l2': ['e2', {'k3': 'v3'}]}}
       });
     });
 
diff --git a/test/amplitude.js b/test/amplitude.js
index d73f9a04..34dc7cd7 100644
--- a/test/amplitude.js
+++ b/test/amplitude.js
@@ -570,9 +570,9 @@ describe('Amplitude', function() {
         'bool': true,
         'string': 'test',
         'array': [0, 1, 2, '3'],
-        'nested_array': ['a'],
+        'nested_array': ['a', {'key':'value'}],
         'object': {'key':'value'},
-        'nested_object': {'k':'v', 'l':[0,1], 'o':{'k2':'v2', 'l2': ['e2']}}
+        'nested_object': {'k':'v', 'l':[0,1], 'o':{'k2':'v2', 'l2': ['e2', {'k3':'v3'}]}}
       }
 
       // check that event loaded into memory
@@ -599,9 +599,9 @@ describe('Amplitude', function() {
         'bool': true,
         'string': 'test',
         'array': [0, 1, 2, '3'],
-        'nested_array': ['a'],
+        'nested_array': ['a', {'key':'value'}],
         'object': {'key':'value'},
-        'nested_object': {'k':'v', 'l':[0,1], 'o':{'k2':'v2', 'l2': ['e2']}}
+        'nested_object': {'k':'v', 'l':[0,1], 'o':{'k2':'v2', 'l2': ['e2', {'k3':'v3'}]}}
       }
 
       // check that event loaded into memory
@@ -669,7 +669,7 @@ describe('Amplitude', function() {
         'bool': true,
         'string': 'test',
         'array': [0, 1, 2, '3'],
-        'nested_array': ['a'],
+        'nested_array': ['a', {'key':'value'}],
         'object': {
           'key': 'value'
         },
@@ -678,7 +678,7 @@ describe('Amplitude', function() {
           'l': [0, 1],
           'o': {
               'k2': 'v2',
-              'l2': ['e2']
+              'l2': ['e2', {'k3':'v3'}]
           }
         }
       }
@@ -1969,9 +1969,9 @@ describe('setVersionName', function() {
         'error': 'Error: oops',
         'string': 'test',
         'array': [0, 1, 2, '3'],
-        'nested_array': ['a'],
+        'nested_array': ['a', {'key': 'value'}],
         'object': {'key':'value', '15':'Error: oops'},
-        'nested_object': {'k':'v', 'l':[0,1], 'o':{'k2':'v2', 'l2': ['e2']}}
+        'nested_object': {'k':'v', 'l':[0,1], 'o':{'k2':'v2', 'l2': ['e2', {'k3': 'v3'}]}}
       });
     });
 
diff --git a/test/utils.js b/test/utils.js
index 270c6cce..eb91c91a 100644
--- a/test/utils.js
+++ b/test/utils.js
@@ -214,7 +214,7 @@ describe('utils', function() {
         'error': 'Error: oops',
         'string': 'test',
         'array': [0, 1, 2, '3'],
-        'nested_array': ['a'],
+        'nested_array': ['a', {'key': 'value'}],
         'object': {
           'key': 'value',
           '15': 'Error: oops'
@@ -224,7 +224,7 @@ describe('utils', function() {
           'l': [0, 1],
           'o': {
               'k2': 'v2',
-              'l2': ['e2']
+              'l2': ['e2', {'k3': 'v3'}]
           }
         }
       }