diff --git a/TUnit.Core/Helpers/CastHelper.cs b/TUnit.Core/Helpers/CastHelper.cs
index 060b439e71..b7794ff693 100644
--- a/TUnit.Core/Helpers/CastHelper.cs
+++ b/TUnit.Core/Helpers/CastHelper.cs
@@ -160,7 +160,12 @@ private static bool TryAotSafeConversion(Type targetType, Type sourceType, objec
         // Unwrap single-element enumerables (but not strings or arrays)
         if (value is not string && !sourceType.IsArray && value is IEnumerable enumerable && !typeof(IEnumerable).IsAssignableFrom(targetType))
         {
-            var firstElement = enumerable.Cast<object>().FirstOrDefault();
+            object? firstElement = null;
+            foreach (var item in enumerable)
+            {
+                firstElement = item;
+                break;
+            }
             if (firstElement != null)
             {
                 // Recursively try to cast the first element