diff --git a/winsup/cygwin/release/1.7.26 b/winsup/cygwin/release/1.7.26
index 8f15405bd..378385527 100644
--- a/winsup/cygwin/release/1.7.26
+++ b/winsup/cygwin/release/1.7.26
@@ -18,3 +18,6 @@ Bug fixes:
 
 - Fix random content of /proc/$PID/ctty if the process has no controlling
   tty.  Set to just "\n" instead.
+
+- Properly set process sid rather than always using -1.
+  Fixes: http://cygwin.com/ml/cygwin/2013-10/threads.html#00237