diff --git a/README.org b/README.org
index 9d2cfaf..d22ca41 100644
--- a/README.org
+++ b/README.org
@@ -33,6 +33,9 @@ iteration.
 
 More methods will be added later once these four will be implemented.
 
+This project has only be tested with RGB images, and does not officially support
+ARGB images. Use ARGB images at your own risks.
+
 * How to build this project
 
 To build the project, you will also be required to install the development