diff --git a/src/ImageSharp/Formats/Png/PngDecoderCore.cs b/src/ImageSharp/Formats/Png/PngDecoderCore.cs
index f58322ee5..6429b68fa 100644
--- a/src/ImageSharp/Formats/Png/PngDecoderCore.cs
+++ b/src/ImageSharp/Formats/Png/PngDecoderCore.cs
@@ -564,6 +564,7 @@ namespace ImageSharp.Formats
                 }
                 else
                 {
+                    this.pass = 0;
                     break;
                 }
             }