diff --git a/api_list.include.md b/api_list.include.md
index c8ca2f07..02f7218c 100644
--- a/api_list.include.md
+++ b/api_list.include.md
@@ -8,6 +8,11 @@
  * `Boolean TryFormat(Span<Char>, Int32&, ReadOnlySpan<Char>, IFormatProvider)` [reference](https://learn.microsoft.com/en-us/dotnet/api/system.byte.tryformat)
 
 
+### Dictionary<TKey,TValue>
+
+ * `Boolean Remove<TKey, TValue>(TKey, TValue&)` [reference](https://learn.microsoft.com/en-us/dotnet/api/system.collections.generic.dictionary-2.remove)
+
+
 ### IEnumerable<TSource>
 
  * `IEnumerable<TSource[]> Chunk<TSource>(Int32)` [reference](https://learn.microsoft.com/en-us/dotnet/api/system.linq.enumerable.chunk)
@@ -54,11 +59,6 @@
  * `Boolean TryFormat(Span<Char>, Int32&, ReadOnlySpan<Char>, IFormatProvider)` [reference](https://learn.microsoft.com/en-us/dotnet/api/system.decimal.tryformat)
 
 
-### Dictionary<TKey, TValue>
-
- * `Boolean Remove(TKey, out TValue)` [reference](https://learn.microsoft.com/en-us/dotnet/api/system.collections.generic.dictionary-2.remove)
-
-
 ### Double
 
  * `Boolean TryFormat(Span<Char>, Int32&, ReadOnlySpan<Char>, IFormatProvider)` [reference](https://learn.microsoft.com/en-us/dotnet/api/system.double.tryformat)
diff --git a/readme.md b/readme.md
index 7829e9e6..f9827642 100644
--- a/readme.md
+++ b/readme.md
@@ -363,6 +363,11 @@ The class `PolyfillExtensions` includes the following extension methods:
  * `Boolean TryFormat(Span<Char>, Int32&, ReadOnlySpan<Char>, IFormatProvider)` [reference](https://learn.microsoft.com/en-us/dotnet/api/system.byte.tryformat)
 
 
+### Dictionary<TKey,TValue>
+
+ * `Boolean Remove<TKey, TValue>(TKey, TValue&)` [reference](https://learn.microsoft.com/en-us/dotnet/api/system.collections.generic.dictionary-2.remove)
+
+
 ### IEnumerable<TSource>
 
  * `IEnumerable<TSource[]> Chunk<TSource>(Int32)` [reference](https://learn.microsoft.com/en-us/dotnet/api/system.linq.enumerable.chunk)
@@ -409,11 +414,6 @@ The class `PolyfillExtensions` includes the following extension methods:
  * `Boolean TryFormat(Span<Char>, Int32&, ReadOnlySpan<Char>, IFormatProvider)` [reference](https://learn.microsoft.com/en-us/dotnet/api/system.decimal.tryformat)
 
 
-### Dictionary<TKey, TValue>
-
- * `Boolean Remove(TKey, out TValue)` [reference](https://learn.microsoft.com/en-us/dotnet/api/system.collections.generic.dictionary-2.remove)
-
-
 ### Double
 
  * `Boolean TryFormat(Span<Char>, Int32&, ReadOnlySpan<Char>, IFormatProvider)` [reference](https://learn.microsoft.com/en-us/dotnet/api/system.double.tryformat)
diff --git a/src/Polyfill/Nullability/NullabilityInfoContext.cs b/src/Polyfill/Nullability/NullabilityInfoContext.cs
index 18964394..fc2dbe3e 100644
--- a/src/Polyfill/Nullability/NullabilityInfoContext.cs
+++ b/src/Polyfill/Nullability/NullabilityInfoContext.cs
@@ -97,35 +97,47 @@ public NullabilityInfo Create(ParameterInfo parameterInfo)
 
         private void CheckParameterMetadataType(ParameterInfo parameter, NullabilityInfo nullability)
         {
-            if (parameter.Member is MethodInfo method)
+            ParameterInfo? metaParameter;
+            MemberInfo metaMember;
+
+            switch (parameter.Member)
             {
-                MethodInfo metaMethod = GetMethodMetadataDefinition(method);
-                ParameterInfo? metaParameter = null;
-                if (string.IsNullOrEmpty(parameter.Name))
-                {
-                    metaParameter = metaMethod.ReturnParameter;
-                }
-                else
-                {
-                    ParameterInfo[] parameters = metaMethod.GetParameters();
-                    for (int i = 0; i < parameters.Length; i++)
-                    {
-                        if (parameter.Position == i &&
-                            parameter.Name == parameters[i].Name)
-                        {
-                            metaParameter = parameters[i];
-                            break;
-                        }
-                    }
-                }
+                case ConstructorInfo ctor:
+                    var metaCtor = (ConstructorInfo)GetMemberMetadataDefinition(ctor);
+                    metaMember = metaCtor;
+                    metaParameter = GetMetaParameter(metaCtor, parameter);
+                    break;
+
+                case MethodInfo method:
+                    MethodInfo metaMethod = GetMethodMetadataDefinition(method);
+                    metaMember = metaMethod;
+                    metaParameter = string.IsNullOrEmpty(parameter.Name) ? metaMethod.ReturnParameter : GetMetaParameter(metaMethod, parameter);
+                    break;
+
+                default:
+                    return;
+            }
 
-                if (metaParameter != null)
+            if (metaParameter != null)
+            {
+                CheckGenericParameters(nullability, metaMember, metaParameter.ParameterType, parameter.Member.ReflectedType);
+            }
+        }
+
+        private static ParameterInfo? GetMetaParameter(MethodBase metaMethod, ParameterInfo parameter)
+        {
+            var parameters = metaMethod.GetParameters();
+            for (int i = 0; i < parameters.Length; i++)
+            {
+                if (parameter.Position == i &&
+                    parameter.Name == parameters[i].Name)
                 {
-                    CheckGenericParameters(nullability, metaMethod, metaParameter.ParameterType, parameter.Member.ReflectedType);
+                    return parameters[i];
                 }
             }
-        }
 
+            return null;
+        }
         private static MethodInfo GetMethodMetadataDefinition(MethodInfo method)
         {
             if (method.IsGenericMethod && !method.IsGenericMethodDefinition)
@@ -210,9 +222,7 @@ public NullabilityInfo Create(PropertyInfo propertyInfo)
 
             if (setter != null)
             {
-                var parameters = setter.GetParameters();
-
-                CheckNullabilityAttributes(nullability, parameters[parameters.Length-1].GetCustomAttributesData());
+                CheckNullabilityAttributes(nullability, setter.GetParameters()[^1].GetCustomAttributesData());
             }
             else
             {
diff --git a/src/Tests/NullabilitySync.cs b/src/Tests/NullabilitySync.cs
index 20496089..39385ba6 100644
--- a/src/Tests/NullabilitySync.cs
+++ b/src/Tests/NullabilitySync.cs
@@ -31,7 +31,9 @@ public async Task Run()
                 """
                 var parameters = setter.GetParameters();
                                 CheckNullabilityAttributes(nullability, parameters[parameters.Length-1].GetCustomAttributesData());
-                """);
+                """)
+            .Replace("ReadOnlySpan<ParameterInfo> parameters = metaMethod.GetParametersAsSpan();", "var parameters = metaMethod.GetParameters();")
+            .Replace(".GetParametersAsSpan()", ".GetParameters()");
 
         var lines = infoContext.Split('\r', '\n');
         infoContext = string.Join(Environment.NewLine, lines.Where(_ => !_.Contains("ArgumentNullException.ThrowIfNull")));