diff --git a/dotnet/src/dotnetframework/GxClasses/Helpers/JSONHelper.cs b/dotnet/src/dotnetframework/GxClasses/Helpers/JSONHelper.cs
index 9d99a5d4f..cf0b46972 100644
--- a/dotnet/src/dotnetframework/GxClasses/Helpers/JSONHelper.cs
+++ b/dotnet/src/dotnetframework/GxClasses/Helpers/JSONHelper.cs
@@ -262,7 +262,7 @@ public static T ReadJSON<T>(string json, GXBaseCollection<SdtMessages_Message> M
 		{
 			try
 			{
-				if (!string.IsNullOrEmpty(json))
+				if (!string.IsNullOrWhiteSpace(json))
 				{
 					return GXJsonSerializer.Instance.ReadJSON<T>(json);
 				}
@@ -283,7 +283,7 @@ public static T ReadJavascriptJSON<T>(string json, GXBaseCollection<SdtMessages_
 		{
 			try
 			{
-				if (!string.IsNullOrEmpty(json))
+				if (!string.IsNullOrWhiteSpace(json))
 				{
 
 					return GXJsonSerializer.Instance.ReadJSON<T>(json);
@@ -449,7 +449,7 @@ public static T Deserialize<T>(string kbObject, Encoding encoding, IEnumerable<T
 		}
 		internal static T Deserialize<T>(string kbObject, Encoding encoding, IEnumerable<Type> knownTypes, T defaultValue, DataContractJsonSerializerSettings settings) where T : class
 		{
-			if (!string.IsNullOrEmpty(kbObject))
+			if (!string.IsNullOrWhiteSpace(kbObject))
 			{
 				try
 				{