diff --git a/ICD.Common.Utils/Extensions/JsonReaderExtensions.cs b/ICD.Common.Utils/Extensions/JsonReaderExtensions.cs
index e50a120..1a5f128 100644
--- a/ICD.Common.Utils/Extensions/JsonReaderExtensions.cs
+++ b/ICD.Common.Utils/Extensions/JsonReaderExtensions.cs
@@ -146,6 +146,9 @@ namespace ICD.Common.Utils.Extensions
 			if (extends == null)
 				throw new ArgumentNullException("extends");
 			
+			if (!extends.TokenType.IsPrimitive())
+				throw new FormatException("Expected primitive token type but got " + extends.TokenType);
+
 			return extends.Value == null ? null : extends.Value.ToString();
 		}
 
diff --git a/ICD.Common.Utils/Extensions/JsonTokenExtensions.cs b/ICD.Common.Utils/Extensions/JsonTokenExtensions.cs
new file mode 100644
index 0000000..a2ab88f
--- /dev/null
+++ b/ICD.Common.Utils/Extensions/JsonTokenExtensions.cs
@@ -0,0 +1,45 @@
+using System;
+using Newtonsoft.Json;
+
+namespace ICD.Common.Utils.Extensions
+{
+	public static class JsonTokenExtensions
+	{
+		/// <summary>
+		/// Returns true if the JsonToken respresents a single data value
+		/// rather than a complex type such as an object or an array.
+		/// </summary>
+		/// <param name="extends"></param>
+		/// <returns></returns>
+		public static bool IsPrimitive(this JsonToken extends)
+		{
+			switch (extends)
+			{
+				case JsonToken.None:
+				case JsonToken.StartObject:
+				case JsonToken.StartArray:
+				case JsonToken.StartConstructor:
+				case JsonToken.EndObject:
+				case JsonToken.EndArray:
+				case JsonToken.EndConstructor:
+				case JsonToken.Undefined:
+					return false;
+
+				case JsonToken.PropertyName:
+				case JsonToken.Comment:
+				case JsonToken.Raw:
+				case JsonToken.Integer:
+				case JsonToken.Float:
+				case JsonToken.String:
+				case JsonToken.Boolean:
+				case JsonToken.Null:
+				case JsonToken.Date:
+				case JsonToken.Bytes:
+					return true;
+
+				default:
+					throw new ArgumentOutOfRangeException("extends");
+			}
+		}
+	}
+}
\ No newline at end of file
diff --git a/ICD.Common.Utils/ICD.Common.Utils_SimplSharp.csproj b/ICD.Common.Utils/ICD.Common.Utils_SimplSharp.csproj
index 7939358..1ba061a 100644
--- a/ICD.Common.Utils/ICD.Common.Utils_SimplSharp.csproj
+++ b/ICD.Common.Utils/ICD.Common.Utils_SimplSharp.csproj
@@ -110,6 +110,7 @@
     <Compile Include="Extensions\ByteExtensions.cs" />
     <Compile Include="Extensions\DayOfWeekExtensions.cs" />
     <Compile Include="Extensions\JsonSerializerExtensions.cs" />
+    <Compile Include="Extensions\JsonTokenExtensions.cs" />
     <Compile Include="Extensions\JsonWriterExtensions.cs" />
     <Compile Include="Extensions\ListExtensions.cs" />
     <Compile Include="Comparers\PredicateEqualityComparer.cs" />