diff --git a/ArcFormats/ImageMNG.cs b/ArcFormats/ImageMNG.cs
index d3698fdf..9de4dc50 100644
--- a/ArcFormats/ImageMNG.cs
+++ b/ArcFormats/ImageMNG.cs
@@ -79,13 +79,11 @@ namespace GameRes.Formats
             return info;
         }
 
-        internal static readonly byte[] PngHeader = { 0x89, 0x50, 0x4E, 0x47, 0x0D, 0x0A, 0x1A, 0x0A };
-
         public override ImageData Read (IBinaryStream file, ImageMetaData info)
         {
             var meta = (MngMetaData)info;
             var body = new StreamRegion (file.AsStream, meta.PngOffset, true);
-            using (var png = new PrefixStream (PngHeader, body))
+            using (var png = new PrefixStream (PngFormat.HeaderBytes, body))
             {
                 var decoder = new PngBitmapDecoder (png, BitmapCreateOptions.None, BitmapCacheOption.OnLoad);
                 var frame = decoder.Frames[0];
@@ -188,7 +186,7 @@ namespace GameRes.Formats
 
         public MngFrameDecoder (IBinaryStream input)
         {
-            var png = new PrefixStream (MngFormat.PngHeader, input.AsStream);
+            var png = new PrefixStream (PngFormat.HeaderBytes, input.AsStream);
             m_input = new BinaryStream (png, input.Name);
             try
             {
diff --git a/ArcFormats/Malie/ImageMGF.cs b/ArcFormats/Malie/ImageMGF.cs
index fc324859..dd12b376 100644
--- a/ArcFormats/Malie/ImageMGF.cs
+++ b/ArcFormats/Malie/ImageMGF.cs
@@ -39,14 +39,12 @@ namespace GameRes.Formats.Malie
         public override uint     Signature { get { return 0x696C614D; } } // 'Mali'
         public override bool      CanWrite { get { return true; } }
 
-        static readonly byte[] PngHeader = { 0x89, 0x50, 0x4E, 0x47, 0x0D, 0x0A, 0x1A, 0x0A };
-
         public override ImageMetaData ReadMetaData (IBinaryStream stream)
         {
             var header = stream.ReadHeader (8).ToArray();
             if (!Binary.AsciiEqual (header, "MalieGF"))
                 return null;
-            Buffer.BlockCopy (PngHeader, 0, header, 0, 8);
+            Buffer.BlockCopy (HeaderBytes, 0, header, 0, 8);
 
             using (var data = new StreamRegion (stream.AsStream, 8, true))
             using (var pre = new PrefixStream (header, data))
@@ -56,7 +54,7 @@ namespace GameRes.Formats.Malie
 
         public override ImageData Read (IBinaryStream stream, ImageMetaData info)
         {
-            var header = PngHeader.Clone() as byte[];
+            var header = HeaderBytes.Clone() as byte[];
             using (var data = new StreamRegion (stream.AsStream, 8, true))
             using (var pre = new PrefixStream (header, data))
             using (var png = new BinaryStream (pre, stream.Name))
diff --git a/ArcFormats/Morning/ArcPAK.cs b/ArcFormats/Morning/ArcPAK.cs
index 57f8575b..a01bd6fb 100644
--- a/ArcFormats/Morning/ArcPAK.cs
+++ b/ArcFormats/Morning/ArcPAK.cs
@@ -75,7 +75,6 @@ namespace GameRes.Formats.Morning
             return new ArcFile (file, this, dir);
         }
 
-        static readonly byte[] PngHeader = { 0x89, 0x50, 0x4E, 0x47, 0x0D, 0x0A, 0x1A, 0x0A };
         static readonly byte[] PngIHdr   = { 0x00, 0x00, 0x00, 0x0D, 0x49, 0x48, 0x44, 0x52 };
 
         public override Stream OpenEntry (ArcFile arc, Entry entry)
@@ -83,7 +82,7 @@ namespace GameRes.Formats.Morning
             if (entry.Size <= 8 || !arc.File.View.BytesEqual (entry.Offset, PngIHdr))
                 return base.OpenEntry (arc, entry);
             Stream input = arc.File.CreateStream (entry.Offset, entry.Size);
-            return new PrefixStream (PngHeader, input);
+            return new PrefixStream (PngFormat.HeaderBytes, input);
         }
 
         void DecryptIndex (byte[] data, byte[] key)
diff --git a/ArcFormats/Palette/ImagePGA.cs b/ArcFormats/Palette/ImagePGA.cs
index e42f748e..9186f13f 100644
--- a/ArcFormats/Palette/ImagePGA.cs
+++ b/ArcFormats/Palette/ImagePGA.cs
@@ -63,7 +63,7 @@ namespace GameRes.Formats.Palette
             }
         }
 
-        public static readonly byte[] PngHeader = { 0x89, 0x50, 0x4E, 0x47, 0xD, 0xA, 0x1A, 0xA };
+        public static byte[] PngHeader { get { return HeaderBytes; } }
         public static readonly byte[] PngFooter = { 0, 0, 0, 0, 0x49, 0x45, 0x4E, 0x44, 0xAE, 0x42, 0x60, 0x82 };
 
         IBinaryStream DeobfuscateStream (IBinaryStream stream)
diff --git a/GameRes/ImagePNG.cs b/GameRes/ImagePNG.cs
index 4de63b2d..24d7fc74 100644
--- a/GameRes/ImagePNG.cs
+++ b/GameRes/ImagePNG.cs
@@ -41,6 +41,8 @@ namespace GameRes
         public override uint     Signature { get { return 0x474e5089; } }
         public override bool      CanWrite { get { return true; } }
 
+        public static readonly byte[] HeaderBytes = { 0x89, 0x50, 0x4E, 0x47, 0x0D, 0x0A, 0x1A, 0x0A };
+
         public override ImageData Read (IBinaryStream file, ImageMetaData info)
         {
             var decoder = new PngBitmapDecoder (file.AsStream,