diff --git a/src/Exceptionless/Extensions/DataDictionaryExtensions.cs b/src/Exceptionless/Extensions/DataDictionaryExtensions.cs
index 306deff4..772483ad 100644
--- a/src/Exceptionless/Extensions/DataDictionaryExtensions.cs
+++ b/src/Exceptionless/Extensions/DataDictionaryExtensions.cs
@@ -111,7 +111,7 @@ public static void AddObject(this IData data, ExtendedDataInfo info, Exceptionle
                 int index = 1;
                 while (data.Data.ContainsKey(name))
                     name = dataType.Name + index++;
-            } else if (name.AnyWildcardMatches(exclusions, true)) {
+            } else if (exclusions.Length > 0 && name.AnyWildcardMatches(exclusions, true)) {
                 return;
             }
 
diff --git a/src/Exceptionless/Serializer/DefaultJsonSerializer.cs b/src/Exceptionless/Serializer/DefaultJsonSerializer.cs
index 909e681b..976f2a4a 100644
--- a/src/Exceptionless/Serializer/DefaultJsonSerializer.cs
+++ b/src/Exceptionless/Serializer/DefaultJsonSerializer.cs
@@ -47,11 +47,10 @@ public virtual string Serialize(object model, string[] exclusions = null, int ma
             if (maxDepth < 1)
                 maxDepth = Int32.MaxValue;
 
-            var excludedPropertyNames = new HashSet<string>(exclusions ?? new string[0], StringComparer.OrdinalIgnoreCase);            
             using (var sw = new StringWriter()) {
-                using (var jw = new JsonTextWriterWithExclusions(sw, excludedPropertyNames)) {
+                using (var jw = new JsonTextWriterWithExclusions(sw, exclusions)) {
                     jw.Formatting = Formatting.None;
-                    Func<JsonProperty, object, bool> include = (property, value) => ShouldSerialize(jw, property, value, maxDepth, excludedPropertyNames);
+                    Func<JsonProperty, object, bool> include = (property, value) => ShouldSerialize(jw, property, value, maxDepth, exclusions);
                     var resolver = new ExceptionlessContractResolver(include);
                     serializer.ContractResolver = resolver;
                     if (continueOnSerializationError)
@@ -71,9 +70,9 @@ public virtual object Deserialize(string json, Type type) {
             return JsonConvert.DeserializeObject(json, type, _serializerSettings);
         }
 
-        private bool ShouldSerialize(JsonTextWriterWithDepth jw, JsonProperty property, object obj, int maxDepth, ISet<string> excludedPropertyNames) {
+        private bool ShouldSerialize(JsonTextWriterWithDepth jw, JsonProperty property, object obj, int maxDepth, string[] excludedPropertyNames) {
             try {
-                if (excludedPropertyNames != null && (property.UnderlyingName.AnyWildcardMatches(excludedPropertyNames, true) || property.PropertyName.AnyWildcardMatches(excludedPropertyNames, true)))
+                if (excludedPropertyNames != null && excludedPropertyNames.Length > 0 && (property.UnderlyingName.AnyWildcardMatches(excludedPropertyNames, ignoreCase: true) || property.PropertyName.AnyWildcardMatches(excludedPropertyNames, ignoreCase: true)))
                     return false;
 
                 bool isPrimitiveType = DefaultContractResolver.IsJsonPrimitiveType(property.PropertyType);
diff --git a/src/Exceptionless/Serializer/JsonTextWriterWithExclusions.cs b/src/Exceptionless/Serializer/JsonTextWriterWithExclusions.cs
index 2b093254..f1240bc0 100644
--- a/src/Exceptionless/Serializer/JsonTextWriterWithExclusions.cs
+++ b/src/Exceptionless/Serializer/JsonTextWriterWithExclusions.cs
@@ -5,15 +5,18 @@
 
 namespace Exceptionless.Serializer
 {
-    internal class JsonTextWriterWithExclusions : JsonTextWriterWithDepth {
-        private readonly ISet<string> _excludedPropertyNames;
+    internal sealed class JsonTextWriterWithExclusions : JsonTextWriterWithDepth {
+        private readonly string[] _excludedPropertyNames;
         
-        public JsonTextWriterWithExclusions(TextWriter textWriter, ISet<string> excludedPropertyNames) : base(textWriter) {
+        public JsonTextWriterWithExclusions(TextWriter textWriter, string[] excludedPropertyNames) : base(textWriter) {
             _excludedPropertyNames = excludedPropertyNames;
         }
         
         public override bool ShouldWriteProperty(string name) {
-            return !name.AnyWildcardMatches(_excludedPropertyNames, true);
+            var exclusions = _excludedPropertyNames;
+            return exclusions is null ||
+                exclusions.Length == 0 || 
+                !name.AnyWildcardMatches(exclusions, ignoreCase: true);
         }
     }
 }
\ No newline at end of file