diff --git a/README b/README
index 7e9c111..809a00a 100644
--- a/README
+++ b/README
@@ -45,6 +45,9 @@ At this point, the program will safely crash.
 Supported interfaces
 ====================
 
+The following interfaces are overriden to provide buffer overflow
+runtime checks.
+
 FD_CLR
 FD_SET
 bcopy