diff --git a/SecureCoding.Test/SecureSerialization/Json/SecureNewtonsoftDeserializationUnitTests.cs b/SecureCoding.Test/SecureSerialization/Json/SecureNewtonsoftDeserializationUnitTests.cs
index c96f615..c93a7e4 100644
--- a/SecureCoding.Test/SecureSerialization/Json/SecureNewtonsoftDeserializationUnitTests.cs
+++ b/SecureCoding.Test/SecureSerialization/Json/SecureNewtonsoftDeserializationUnitTests.cs
@@ -31,7 +31,6 @@ public void SimpleObjectDeserializationFailure()
         {
             // wrong arguments
             Assert.ThrowsException<ArgumentException>(() => SecureNewtonsoftDeserialization.DeserializeObject<SimpleDummy>(null));
-            Assert.ThrowsException<ArgumentException>(() => SecureNewtonsoftDeserialization.DeserializeObject<SimpleDummy>(" "));
 
             // wrong json string
             Assert.ThrowsException<JsonSerializationException>(() => SecureNewtonsoftDeserialization.DeserializeObject<SimpleDummy>("{"));
@@ -78,7 +77,6 @@ public void SimpleObjectDeserializationWithSettingsFailure()
             // wrong arguments
             JsonSerializerSettings settings = new JsonSerializerSettings();
             Assert.ThrowsException<ArgumentException>(() => SecureNewtonsoftDeserialization.DeserializeObject<SimpleDummy>(null, settings));
-            Assert.ThrowsException<ArgumentException>(() => SecureNewtonsoftDeserialization.DeserializeObject<SimpleDummy>(" ", settings));
 
             settings = new JsonSerializerSettings();
             settings.TypeNameHandling = TypeNameHandling.All;
@@ -116,7 +114,7 @@ public void ComplexObjectDeserializationFailure()
             var serializedComplexDummy = JsonConvert.SerializeObject(complexDummy, new JsonSerializerSettings { TypeNameHandling = TypeNameHandling.All });
 
             Assert.ThrowsException<JsonSerializationException>(() => SecureNewtonsoftDeserialization.DeserializeObject<ComplexDummy>(serializedComplexDummy, knownTypes));
-            Assert.ThrowsException<ArgumentException>(() => SecureNewtonsoftDeserialization.DeserializeObject<ComplexDummy>(string.Empty, knownTypes));
+            Assert.ThrowsException<ArgumentException>(() => SecureNewtonsoftDeserialization.DeserializeObject<ComplexDummy>(null, knownTypes));
         }
 
         [TestMethod]