diff --git a/DragonFruit.Common.Data.Tests/RequestDataCompilationTests.cs b/DragonFruit.Common.Data.Tests/RequestDataCompilationTests.cs
index 820904a..619c374 100644
--- a/DragonFruit.Common.Data.Tests/RequestDataCompilationTests.cs
+++ b/DragonFruit.Common.Data.Tests/RequestDataCompilationTests.cs
@@ -3,6 +3,7 @@
 
 using System.Linq;
 using DragonFruit.Common.Data.Parameters;
+using DragonFruit.Common.Data.Utils;
 using NUnit.Framework;
 
 namespace DragonFruit.Common.Data.Tests
@@ -29,10 +30,11 @@ public void TestQueries()
         [TestCase]
         public void TestEnumHandling()
         {
-            var query = new TestRequest().FullUrl.Split('?').Last().Split('&');
+            var request = new TestRequest();
+            var query = request.FullUrl.Split('?').Last().Split('&');
 
             Assert.IsTrue(query.Contains($"enum={nameof(EnumValues.Red)}"));
-            Assert.IsTrue(query.Contains($"enum={nameof(EnumValues.Blue).ToLower()}"));
+            Assert.IsTrue(query.Contains($"enum={nameof(EnumValues.Blue).ToLower(CultureUtils.DefaultCulture)}"));
             Assert.IsTrue(query.Contains($"enum={(int)EnumValues.Green}"));
         }
     }
diff --git a/DragonFruit.Common.Data/Utils/ParameterUtils.cs b/DragonFruit.Common.Data/Utils/ParameterUtils.cs
index 6a9993e..919322b 100644
--- a/DragonFruit.Common.Data/Utils/ParameterUtils.cs
+++ b/DragonFruit.Common.Data/Utils/ParameterUtils.cs
@@ -65,7 +65,7 @@ internal static IEnumerable<KeyValuePair<string, string>> GetParameter<T>(object
                     yield return attribute.EnumHandling.Value switch
                     {
                         EnumHandlingMode.Numeric => ((int)propertyValue).ToKeyValuePair(keyName, culture),
-                        EnumHandlingMode.StringLower => propertyValue.ToString().ToLower().ToKeyValuePair(keyName, culture),
+                        EnumHandlingMode.StringLower => propertyValue.ToString().ToLower(culture).ToKeyValuePair(keyName, culture),
 
                         // default includes string handling
                         _ => propertyValue.ToKeyValuePair(keyName, culture)