diff --git a/src/ImageSharp.Formats.Png/PngEncoderCore.cs b/src/ImageSharp.Formats.Png/PngEncoderCore.cs
index 46aa2187bf..9acaf5b9fa 100644
--- a/src/ImageSharp.Formats.Png/PngEncoderCore.cs
+++ b/src/ImageSharp.Formats.Png/PngEncoderCore.cs
@@ -495,7 +495,7 @@ namespace ImageSharp.Formats
 
             if (this.Quantizer == null)
             {
-                this.Quantizer = new WuQuantizer<TColor>();
+                this.Quantizer = new OctreeQuantizer<TColor>();
             }
 
             // Quantize the image returning a palette. This boxing is icky.