diff --git a/src/Polyfill/Nullability/NullabilityInfoContext.cs b/src/Polyfill/Nullability/NullabilityInfoContext.cs
index 42b0ef0f..a2939cdb 100644
--- a/src/Polyfill/Nullability/NullabilityInfoContext.cs
+++ b/src/Polyfill/Nullability/NullabilityInfoContext.cs
@@ -223,6 +223,7 @@ public NullabilityInfo Create(PropertyInfo propertyInfo)
             if (setter != null)
             {
                 var parameters = setter.GetParameters();
+
                 CheckNullabilityAttributes(nullability, parameters[parameters.Length-1].GetCustomAttributesData());
             }
             else
diff --git a/src/Tests/NullabilitySync.cs b/src/Tests/NullabilitySync.cs
index c7380ba9..ceab6b5a 100644
--- a/src/Tests/NullabilitySync.cs
+++ b/src/Tests/NullabilitySync.cs
@@ -27,13 +27,7 @@ public async Task Run()
             .Replace(".IsGenericMethodParameter", ".IsGenericMethodParameter()")
             .Replace("SR.NullabilityInfoContext_NotSupported", "\"NullabilityInfoContext is not supported\"")
             .Replace(
-                "CheckNullabilityAttributes(nullability, setter.GetParameters()[^1].GetCustomAttributesData());",
-                """
-                var parameters = setter.GetParameters();
-                CheckNullabilityAttributes(nullability, parameters[parameters.Length-1].GetCustomAttributesData());
-                """)
-            .Replace(
-                "CheckNullabilityAttributes(nullability, setter.GetParameters()[^1].GetCustomAttributesData());",
+                "CheckNullabilityAttributes(nullability, setter.GetParametersAsSpan()[^1].GetCustomAttributesData());",
                 """
                 var parameters = setter.GetParameters();
                                 CheckNullabilityAttributes(nullability, parameters[parameters.Length-1].GetCustomAttributesData());