diff --git a/docs/user/compatibility.dox b/docs/user/compatibility.dox
index 5ae9d3cdbe..0a1b7c6944 100644
--- a/docs/user/compatibility.dox
+++ b/docs/user/compatibility.dox
@@ -41,8 +41,10 @@ some specific examples:
   source and binary incompatible.
 - The file system API has changed; file systems that worked on BeOS will no
   longer work on Haiku.
-- Haiku is not compatible with the Network kit, nor with BONE. Instead, we have
-  both UNIX sockets and a new C++ API.
+- Haiku is binary compatible with the Network Kit in BeOS R5 as well as BONE,
+  ie. the BSD socket API as well as Be's proprietary C++ API.
+  However, the ioctl() interface is not compatible with BONE (BeOS R5 did not
+  have such an interface in the first place).
 - In several places we also dropped compatibility support for older BeOS
   versions (PR2, R3, R4), which BeOS R5 still featured.
 */