diff --git a/src/Microsoft.AspNetCore.Authentication/LoggingExtensions.cs b/src/Microsoft.AspNetCore.Authentication/LoggingExtensions.cs
index 46223d6471..8cba6c0d5e 100644
--- a/src/Microsoft.AspNetCore.Authentication/LoggingExtensions.cs
+++ b/src/Microsoft.AspNetCore.Authentication/LoggingExtensions.cs
@@ -39,7 +39,7 @@ namespace Microsoft.Extensions.Logging
                 formatString: "{AuthenticationScheme} was not authenticated. Failure message: {FailureMessage}");
             _authSchemeAuthenticated = LoggerMessage.Define<string>(
                 eventId: 8,
-                logLevel: LogLevel.Information,
+                logLevel: LogLevel.Debug,
                 formatString: "AuthenticationScheme: {AuthenticationScheme} was successfully authenticated.");
             _authSchemeNotAuthenticated = LoggerMessage.Define<string>(
                 eventId: 9,