diff --git a/dotnet/src/webdriver/Chromium/ChromiumDriverService.cs b/dotnet/src/webdriver/Chromium/ChromiumDriverService.cs
index 8721eb5903cd1..72e4b2f09a51c 100644
--- a/dotnet/src/webdriver/Chromium/ChromiumDriverService.cs
+++ b/dotnet/src/webdriver/Chromium/ChromiumDriverService.cs
@@ -160,10 +160,7 @@ protected override string CommandLineArguments
 
             if (this.LogLevel != ChromiumDriverLogLevel.Default)
             {
-                if (Enum.IsDefined(typeof(ChromiumDriverLogLevel), this.LogLevel))
-                {
-                    argsBuilder.Append(string.Format(CultureInfo.InvariantCulture, " --log-level={0}", this.LogLevel.ToString().ToUpperInvariant()));
-                }
+                argsBuilder.Append(string.Format(CultureInfo.InvariantCulture, " --log-level={0}", this.LogLevel.ToString().ToUpperInvariant()));
             }