diff --git a/src/abstractions/Helpers/EnumHelpers.cs b/src/abstractions/Helpers/EnumHelpers.cs
index 20200505..86397558 100644
--- a/src/abstractions/Helpers/EnumHelpers.cs
+++ b/src/abstractions/Helpers/EnumHelpers.cs
@@ -177,7 +177,7 @@ private static bool TryGetFieldValueName(Type type, string rawValue, out string
             if(type.GetField(name)?.GetCustomAttribute<EnumMemberAttribute>() is { } attribute)
                 return attribute.Value;
 
-            return name.ToFirstCharacterLowerCase();
+            return name;
         }
     }
 }
diff --git a/tests/serialization/form/FormSerializationWriterTests.cs b/tests/serialization/form/FormSerializationWriterTests.cs
index 109410ab..ffc29db2 100644
--- a/tests/serialization/form/FormSerializationWriterTests.cs
+++ b/tests/serialization/form/FormSerializationWriterTests.cs
@@ -51,7 +51,7 @@ public void WritesSampleObjectValue()
 
         // Assert
         var expectedString = "id=48d31887-5fad-4d73-a9f5-3c356e68a038&" +
-                                "numbers=one%2Ctwo&" +   // serializes enums
+                                "numbers=One%2CTwo&" +   // serializes enums
                                 "workDuration=PT1H&" +    // Serializes timespans
                                 "birthDay=2017-09-04&" + // Serializes dates
                                 "startWorkTime=08%3A00%3A00&" + //Serializes times
@@ -432,7 +432,7 @@ public void WriteEnumValue_IsWrittenCorrectly()
         var serializedString = reader.ReadToEnd();
 
         // Assert
-        Assert.Equal("prop1=sixteen", serializedString);
+        Assert.Equal("prop1=Sixteen", serializedString);
     }
 
     [Fact]
@@ -468,6 +468,6 @@ public void WriteCollectionOfEnumValues_IsWrittenCorrectly()
         var serializedString = reader.ReadToEnd();
 
         // Assert
-        Assert.Equal("prop1=sixteen%2Ctwo", serializedString);
+        Assert.Equal("prop1=Sixteen%2CTwo", serializedString);
     }
 }
diff --git a/tests/serialization/json/JsonSerializationWriterTests.cs b/tests/serialization/json/JsonSerializationWriterTests.cs
index d2362f34..d0ea10c2 100644
--- a/tests/serialization/json/JsonSerializationWriterTests.cs
+++ b/tests/serialization/json/JsonSerializationWriterTests.cs
@@ -157,7 +157,7 @@ public void WritesSampleCollectionOfObjectValues()
             // Assert
             var expectedString = "[{" +
                                  "\"id\":\"48d31887-5fad-4d73-a9f5-3c356e68a038\"," +
-                                 "\"numbers\":\"one,two\"," +
+                                 "\"numbers\":\"One,Two\"," +
                                  "\"testNamingEnum\":\"Item2:SubItem1\"," +
                                  "\"mobilePhone\":null," +
                                  "\"accountEnabled\":false," +
@@ -206,7 +206,7 @@ public void WritesEnumValuesAsCamelCasedIfNotEscaped()
 
             // Assert
             var expectedString = "[{" +
-                                 "\"testNamingEnum\":\"item1\"" + // Camel Cased
+                                 "\"testNamingEnum\":\"Item1\"" + // Camel Cased
                                  "}]";
             Assert.Equal(expectedString, serializedJsonString);
         }
diff --git a/tests/serialization/text/TextSerializationWriterTests.cs b/tests/serialization/text/TextSerializationWriterTests.cs
index b8038e2f..cfd170bf 100644
--- a/tests/serialization/text/TextSerializationWriterTests.cs
+++ b/tests/serialization/text/TextSerializationWriterTests.cs
@@ -350,7 +350,7 @@ public void WriteEnumValue_IsWrittenCorrectly()
             var serializedString = reader.ReadToEnd();
 
             // Assert
-            Assert.Equal("firstItem", serializedString);
+            Assert.Equal("FirstItem", serializedString);
         }