diff --git a/src/Magick.NET.Core/IMagickImage.cs b/src/Magick.NET.Core/IMagickImage.cs
index f25748317a..43f177a622 100644
--- a/src/Magick.NET.Core/IMagickImage.cs
+++ b/src/Magick.NET.Core/IMagickImage.cs
@@ -3493,6 +3493,13 @@ Interlace Interlace
/// A base64 .
string ToBase64(MagickFormat format);
+ ///
+ /// Converts this instance to a base64 .
+ ///
+ /// The defines to set.
+ /// A base64 .
+ string ToBase64(IWriteDefines defines);
+
///
/// Converts this instance to a array.
///