diff --git a/src/ImageSharp/Formats/Png/Zlib/Adler32.cs b/src/ImageSharp/Formats/Png/Zlib/Adler32.cs
index 3d41c6b82..d348e7df1 100644
--- a/src/ImageSharp/Formats/Png/Zlib/Adler32.cs
+++ b/src/ImageSharp/Formats/Png/Zlib/Adler32.cs
@@ -59,7 +59,7 @@ namespace SixLabors.ImageSharp.Formats.Png.Zlib
         {
             if (buffer.IsEmpty)
             {
-                return SeedValue;
+                return adler;
             }
 
 #if SUPPORTS_RUNTIME_INTRINSICS
diff --git a/src/ImageSharp/Formats/Png/Zlib/Crc32.cs b/src/ImageSharp/Formats/Png/Zlib/Crc32.cs
index b25c042e1..5b29e3590 100644
--- a/src/ImageSharp/Formats/Png/Zlib/Crc32.cs
+++ b/src/ImageSharp/Formats/Png/Zlib/Crc32.cs
@@ -57,7 +57,7 @@ namespace SixLabors.ImageSharp.Formats.Png.Zlib
         {
             if (buffer.IsEmpty)
             {
-                return SeedValue;
+                return crc;
             }
 
 #if SUPPORTS_RUNTIME_INTRINSICS
diff --git a/tests/ImageSharp.Tests/Formats/Png/Adler32Tests.cs b/tests/ImageSharp.Tests/Formats/Png/Adler32Tests.cs
index a0d4030c3..9c5f0f6a9 100644
--- a/tests/ImageSharp.Tests/Formats/Png/Adler32Tests.cs
+++ b/tests/ImageSharp.Tests/Formats/Png/Adler32Tests.cs
@@ -10,6 +10,15 @@ namespace SixLabors.ImageSharp.Tests.Formats.Png
 {
     public class Adler32Tests
     {
+        [Theory]
+        [InlineData(0)]
+        [InlineData(1)]
+        [InlineData(2)]
+        public void ReturnsCorrectWhenEmpty(uint input)
+        {
+            Assert.Equal(input, Adler32.Calculate(input, default));
+        }
+
         [Theory]
         [InlineData(0)]
         [InlineData(8)]
diff --git a/tests/ImageSharp.Tests/Formats/Png/Crc32Tests.cs b/tests/ImageSharp.Tests/Formats/Png/Crc32Tests.cs
index b40e210e3..56743c3ae 100644
--- a/tests/ImageSharp.Tests/Formats/Png/Crc32Tests.cs
+++ b/tests/ImageSharp.Tests/Formats/Png/Crc32Tests.cs
@@ -10,6 +10,15 @@ namespace SixLabors.ImageSharp.Tests.Formats.Png
 {
     public class Crc32Tests
     {
+        [Theory]
+        [InlineData(0)]
+        [InlineData(1)]
+        [InlineData(2)]
+        public void ReturnsCorrectWhenEmpty(uint input)
+        {
+            Assert.Equal(input, Crc32.Calculate(input, default));
+        }
+
         [Theory]
         [InlineData(0)]
         [InlineData(8)]