diff --git a/src/Security/Authentication/JwtBearer/src/JwtBearerHandler.cs b/src/Security/Authentication/JwtBearer/src/JwtBearerHandler.cs
index de2f69207d2431c767ba0c8681de67dedcbf3003..647d2698af06ca2dc5fd97d24f0bee029c6d6ea5 100644
--- a/src/Security/Authentication/JwtBearer/src/JwtBearerHandler.cs
+++ b/src/Security/Authentication/JwtBearer/src/JwtBearerHandler.cs
@@ -181,7 +181,7 @@ namespace Microsoft.AspNetCore.Authentication.JwtBearer
                     return AuthenticateResult.Fail(authenticationFailedContext.Exception);
                 }
 
-                return AuthenticateResult.Fail("No SecurityTokenValidator available for token: " + token ?? "[null]");
+                return AuthenticateResult.Fail("No SecurityTokenValidator available for token.");
             }
             catch (Exception ex)
             {