diff --git a/Source/OpenTK/Platform/MacOS/AglContext.cs b/Source/OpenTK/Platform/MacOS/AglContext.cs
index cff547e4..7403155a 100644
--- a/Source/OpenTK/Platform/MacOS/AglContext.cs
+++ b/Source/OpenTK/Platform/MacOS/AglContext.cs
@@ -92,6 +92,12 @@ namespace OpenTK.Platform.MacOS
                 AddPixelAttrib(aglAttributes, Agl.PixelFormatAttribute.AGL_ACCUM_BLUE_SIZE, mode.AccumulatorFormat.Blue);
                 AddPixelAttrib(aglAttributes, Agl.PixelFormatAttribute.AGL_ACCUM_ALPHA_SIZE, mode.AccumulatorFormat.Alpha);
             }
+			
+			if (mode.Samples > 0)
+			{
+				AddPixelAttrib(aglAttributes, Agl.PixelFormatAttribute.AGL_SAMPLE_BUFFERS_ARB, 1);
+				AddPixelAttrib(aglAttributes, Agl.PixelFormatAttribute.AGL_SAMPLES_ARB, mode.Samples);
+			}
 
             if (fullscreen)
             {