diff --git a/src/System.Windows.Forms.Design/src/System/ComponentModel/Design/Serialization/TypeCodeDomSerializer.cs b/src/System.Windows.Forms.Design/src/System/ComponentModel/Design/Serialization/TypeCodeDomSerializer.cs
index d44eb887da5..86d1afdaba4 100644
--- a/src/System.Windows.Forms.Design/src/System/ComponentModel/Design/Serialization/TypeCodeDomSerializer.cs
+++ b/src/System.Windows.Forms.Design/src/System/ComponentModel/Design/Serialization/TypeCodeDomSerializer.cs
@@ -548,7 +548,7 @@ private void IntegrateStatements(IDesignerSerializationManager manager, object r
         {
             map.Combine();
             typeDecl.Members.Add(map.Method);
-            Trace(TraceLevel.Verbose, $"...generated {map.Method.Statements.Count} statements into method {map.Method.Name}");
+            Trace(TraceLevel.Verbose, $"...generated {map.Method!.Statements.Count} statements into method {map.Method.Name}");
         }
     }
 }
diff --git a/src/System.Windows.Forms.Design/src/System/Windows/Forms/Design/Behavior/DesignerActionBehavior.cs b/src/System.Windows.Forms.Design/src/System/Windows/Forms/Design/Behavior/DesignerActionBehavior.cs
index aa706e3a280..b8166d840fe 100644
--- a/src/System.Windows.Forms.Design/src/System/Windows/Forms/Design/Behavior/DesignerActionBehavior.cs
+++ b/src/System.Windows.Forms.Design/src/System/Windows/Forms/Design/Behavior/DesignerActionBehavior.cs
@@ -12,13 +12,13 @@ namespace System.Windows.Forms.Design.Behavior;
 /// </summary>
 internal sealed class DesignerActionBehavior : Behavior
 {
-    private readonly IServiceProvider? _serviceProvider; // we need to cache the service provider here to be able to create the panel with the proper arguments
+    private readonly IServiceProvider _serviceProvider; // we need to cache the service provider here to be able to create the panel with the proper arguments
     private bool _ignoreNextMouseUp;
 
     /// <summary>
     ///  Constructor that calls base and caches off the action lists.
     /// </summary>
-    internal DesignerActionBehavior(IServiceProvider? serviceProvider, IComponent relatedComponent, DesignerActionListCollection actionLists, DesignerActionUI parentUI)
+    internal DesignerActionBehavior(IServiceProvider serviceProvider, IComponent relatedComponent, DesignerActionListCollection actionLists, DesignerActionUI parentUI)
     {
         ActionLists = actionLists;
         _serviceProvider = serviceProvider;