diff --git a/FFMpegCore/FFMpeg/FFMpegGlobalOptions.cs b/FFMpegCore/FFMpeg/FFMpegGlobalOptions.cs
index afac5cf..00dc66f 100644
--- a/FFMpegCore/FFMpeg/FFMpegGlobalOptions.cs
+++ b/FFMpegCore/FFMpeg/FFMpegGlobalOptions.cs
@@ -8,7 +8,7 @@ internal FFMpegGlobalOptions() { }
         
         public FFMpegGlobalOptions WithVerbosityLevel(VerbosityLevel verbosityLevel = VerbosityLevel.Error) => WithOption(new VerbosityLevelArgument(verbosityLevel));
         
-        protected FFMpegGlobalOptions WithOption(IArgument argument)
+        private FFMpegGlobalOptions WithOption(IArgument argument)
         {
             Arguments.Add(argument);
             return this;