diff --git a/src/indexbuffer.h b/src/indexbuffer.h
--- a/src/indexbuffer.h
+++ b/src/indexbuffer.h
@@ -24,7 +24,9 @@
 #include "framebuffer2.h"
 
 /// A simple frame buffer that simply returns requested index as
-/// value.
+/// sample value.
+///
+/// @note This buffer isn't for storing data.
 class IndexBuffer : public ResizableBuffer
 {
 public: