diff --git a/src/System.Management.Automation/engine/ICommandRuntime.cs b/src/System.Management.Automation/engine/ICommandRuntime.cs
index cf5de2b20ab..6f0b3ce9d57 100644
--- a/src/System.Management.Automation/engine/ICommandRuntime.cs
+++ b/src/System.Management.Automation/engine/ICommandRuntime.cs
@@ -560,6 +560,7 @@ public interface ICommandRuntime
     /// execute an instance of a Cmdlet. ICommandRuntime2 extends the ICommandRuntime interface
     /// by adding support for the informational data stream.
     /// </summary>
+#nullable enable
     public interface ICommandRuntime2 : ICommandRuntime
     {
         /// <summary>
@@ -614,6 +615,6 @@ public interface ICommandRuntime2 : ICommandRuntime
         /// performed, and the Cmdlet should move on to the next target resource.
         /// </returns>
         [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Design", "CA1045:DoNotPassTypesByReference")]
-        bool ShouldContinue(string query, string caption, bool hasSecurityImpact, ref bool yesToAll, ref bool noToAll);
+        bool ShouldContinue(string? query, string? caption, bool hasSecurityImpact, ref bool yesToAll, ref bool noToAll);
     }
 }