diff --git a/src/Umbraco.Web/Umbraco.Web.csproj b/src/Umbraco.Web/Umbraco.Web.csproj
index c1d56a5031..d494e52178 100644
--- a/src/Umbraco.Web/Umbraco.Web.csproj
+++ b/src/Umbraco.Web/Umbraco.Web.csproj
@@ -425,6 +425,7 @@
     <Compile Include="umbraco.presentation\umbraco\members\EditMember.aspx.cs">
       <SubType>ASPXCodeBehind</SubType>
     </Compile>
+    <Compile Include="umbraco.presentation\umbraco\plugins\tinymce3\JsonSpellCheckerResult.cs" />
     <Compile Include="umbraco.presentation\umbraco\users\EditUser.aspx.cs">
       <SubType>ASPXCodeBehind</SubType>
     </Compile>
diff --git a/src/Umbraco.Web/umbraco.presentation/umbraco/plugins/tinymce3/GoogleSpellChecker.cs b/src/Umbraco.Web/umbraco.presentation/umbraco/plugins/tinymce3/GoogleSpellChecker.cs
index ef3a6376b0..45f90a1726 100644
--- a/src/Umbraco.Web/umbraco.presentation/umbraco/plugins/tinymce3/GoogleSpellChecker.cs
+++ b/src/Umbraco.Web/umbraco.presentation/umbraco/plugins/tinymce3/GoogleSpellChecker.cs
@@ -6,6 +6,7 @@ using System.Net;
 using System.Text;
 using System.Xml;
 using System.Collections.Generic;
+using Newtonsoft.Json;
 
 // NB: This class was moved out of the client tinymce folder to aid with upgrades
 // but we'll keep the old namespace to make things easier for now (MB)
@@ -70,16 +71,16 @@ namespace umbraco.presentation.umbraco_client.tinymce3.plugins.spellchecker
         public override SpellCheckerResult CheckWords(string language, string[] words)
         {
             string data = string.Join(" ", words); //turn them into a space-separated string as that's what google takes
-            string json = SendRequest(language, data);
-            var jsonRes = new JavaScriptSerializer().Deserialize<JsonSpellCheckerResult>(json);
+            string json = SendRequest(language, data);            
+            var jsonRes = JsonConvert.DeserializeObject<JsonSpellCheckerResult>(json);
 
             var res = new SpellCheckerResult();
             // Get list of misspelled words
-            if (jsonRes.result != null && jsonRes.result.spellingCheckResponse != null)
+            if (jsonRes.Result != null && jsonRes.Result.SpellingCheckResponse != null)
             {
-                foreach (var misspelling in jsonRes.result.spellingCheckResponse.misspellings)
+                foreach (var misspelling in jsonRes.Result.SpellingCheckResponse.Misspellings)
                 {
-                    res.result.Add(data.Substring(misspelling.charStart, misspelling.charLength));
+                    res.result.Add(data.Substring(misspelling.CharStart, misspelling.CharLength));
                 }
             }
 
@@ -95,17 +96,17 @@ namespace umbraco.presentation.umbraco_client.tinymce3.plugins.spellchecker
         public override SpellCheckerResult GetSuggestions(string language, string word)
         {
             string json = SendRequest(language, word);
-            var jsonRes = new JavaScriptSerializer().Deserialize<JsonSpellCheckerResult>(json);
+            var jsonRes = JsonConvert.DeserializeObject<JsonSpellCheckerResult>(json);
 
             var res = new SpellCheckerResult();
             // Get list of suggestions
-            if (jsonRes.result != null && jsonRes.result.spellingCheckResponse != null)
+            if (jsonRes.Result != null && jsonRes.Result.SpellingCheckResponse != null)
             {
-                foreach (var misspelling in jsonRes.result.spellingCheckResponse.misspellings)
+                foreach (var misspelling in jsonRes.Result.SpellingCheckResponse.Misspellings)
                 {
-                    foreach (var suggestion in misspelling.suggestions)
+                    foreach (var suggestion in misspelling.Suggestions)
                     {
-                        res.result.Add(suggestion.suggestion);
+                        res.result.Add(suggestion.Suggestion);
                     }
                 }
             }
diff --git a/src/Umbraco.Web/umbraco.presentation/umbraco/plugins/tinymce3/JsonSpellCheckerResult.cs b/src/Umbraco.Web/umbraco.presentation/umbraco/plugins/tinymce3/JsonSpellCheckerResult.cs
new file mode 100644
index 0000000000..fe861e2c80
--- /dev/null
+++ b/src/Umbraco.Web/umbraco.presentation/umbraco/plugins/tinymce3/JsonSpellCheckerResult.cs
@@ -0,0 +1,44 @@
+using System.Collections.Generic;
+using Newtonsoft.Json;
+
+namespace umbraco.presentation.umbraco_client.tinymce3.plugins.spellchecker
+{
+    /// <summary>
+    /// Object used to deserialise the Google Json response
+    /// </summary>
+    internal class JsonSpellCheckerResult
+    {
+        [JsonProperty("result")]
+        public GoogleResponseResult Result { get; set; }
+
+        public class GoogleResponseResult
+        {
+            [JsonProperty("spellingCheckResponse")]
+            public GoogleResponseSpellingCheckResponse SpellingCheckResponse { get; set; }
+
+        }
+        public class GoogleResponseSpellingCheckResponse
+        {
+            [JsonProperty("misspellings")]
+            public List<GoogleResponseMisspelling> Misspellings { get; set; }
+
+        }
+        public class GoogleResponseMisspelling
+        {
+            [JsonProperty("charStart")]
+            public int CharStart { get; set; }
+
+            [JsonProperty("charLength")]
+            public int CharLength { get; set; }
+
+            [JsonProperty("suggestions")]
+            public List<GoogleResponseSuggestion> Suggestions { get; set; }
+
+        }
+        public class GoogleResponseSuggestion
+        {
+            [JsonProperty("suggestion")]
+            public string Suggestion { get; set; }
+        }
+    }
+}
\ No newline at end of file
diff --git a/src/Umbraco.Web/umbraco.presentation/umbraco/plugins/tinymce3/SpellCheckerResult.cs b/src/Umbraco.Web/umbraco.presentation/umbraco/plugins/tinymce3/SpellCheckerResult.cs
index fc5f7a0bfd..1372629cf8 100644
--- a/src/Umbraco.Web/umbraco.presentation/umbraco/plugins/tinymce3/SpellCheckerResult.cs
+++ b/src/Umbraco.Web/umbraco.presentation/umbraco/plugins/tinymce3/SpellCheckerResult.cs
@@ -32,34 +32,4 @@ namespace umbraco.presentation.umbraco_client.tinymce3.plugins.spellchecker
         /// <value>The error.</value>
         public string error { get; set; }
     }
-
-    /// <summary>
-    /// Object used to deserialise the Google Json response
-    /// </summary>
-    public class JsonSpellCheckerResult
-    {
-        public GoogleResponseResult result { get; set; }
-
-        public class GoogleResponseResult
-        {
-            public GoogleResponseSpellingCheckResponse spellingCheckResponse { get; set; }
-
-        }
-        public class GoogleResponseSpellingCheckResponse
-        {
-            public List<GoogleResponseMisspelling> misspellings { get; set; }
-
-        }
-        public class GoogleResponseMisspelling
-        {
-            public int charStart { get; set; }
-            public int charLength { get; set; }
-            public List<GoogleResponseSuggestion> suggestions { get; set; }
-
-        }
-        public class GoogleResponseSuggestion
-        {
-            public string suggestion { get; set; }
-        }
-    }
 }