diff --git a/src/System.Private.CoreLib/shared/System/Threading/Thread.cs b/src/System.Private.CoreLib/shared/System/Threading/Thread.cs
index 28b2e6eb8f5a..a2be70c847fc 100644
--- a/src/System.Private.CoreLib/shared/System/Threading/Thread.cs
+++ b/src/System.Private.CoreLib/shared/System/Threading/Thread.cs
@@ -136,11 +136,12 @@ public static IPrincipal? CurrentPrincipal
         {
             get
             {
-                if (s_asyncLocalPrincipal is null)
+                IPrincipal? principal = s_asyncLocalPrincipal?.Value;
+                if (principal is null)
                 {
-                    CurrentPrincipal = AppDomain.CurrentDomain.GetThreadPrincipal();
+                    CurrentPrincipal = (principal = AppDomain.CurrentDomain.GetThreadPrincipal());
                 }
-                return s_asyncLocalPrincipal?.Value;
+                return principal;
             }
             set
             {