diff --git a/man2/futex.2 b/man2/futex.2
index e2dd0857d..49b1b5b5d 100644
--- a/man2/futex.2
+++ b/man2/futex.2
@@ -866,6 +866,15 @@ nor
 The caller is not allowed to attach itself to the futex.
 (This may be caused by a state corruption in user space.)
 .TP
+.BR ESRCH
+.RB ( FUTEX_LOCK_PI ,
+.BR FUTEX_TRYLOCK_PI )
+.\" FIXME I reworded the following sentence a bit differently from
+.\"       tglx's formulation. Is it okay?
+The thread ID in the futex at
+.I uaddr
+does not exist.
+.TP
 .B ETIMEDOUT
 The operation in
 .IR futex_op