diff --git a/src/OffscreenContext.h b/src/OffscreenContext.h
index 500832ce..e74e1048 100644
--- a/src/OffscreenContext.h
+++ b/src/OffscreenContext.h
@@ -2,7 +2,8 @@
 #define OFFSCREENCONTEXT_H_
 
 // Here we implement a 'portability' pattern but since we are mixing
-// Objective-C with C++, it is a bit different.
+// Objective-C with C++, it is a bit different. The main struct
+// isn't defined in the header, but instead inside the source code files
 
 #include <iostream>
 #include <fstream>