diff --git a/src/ImageSharp/Common/Constants.cs b/src/ImageSharp/Common/Constants.cs
index 308811a42..1db4bc965 100644
--- a/src/ImageSharp/Common/Constants.cs
+++ b/src/ImageSharp/Common/Constants.cs
@@ -8,7 +8,7 @@ namespace ImageSharp.Common
     /// <summary>
     /// Common constants used throughout the project
     /// </summary>
-    public static class Constants
+    internal static class Constants
     {
         /// <summary>
         /// The epsilon for comparing floating point numbers.