diff --git a/doc/ck_ring_capacity b/doc/ck_ring_capacity
index a631557..0332433 100644
--- a/doc/ck_ring_capacity
+++ b/doc/ck_ring_capacity
@@ -25,9 +25,9 @@
 .\"
 .\"
 .Dd April 20, 2013
-.Dt CK_RING_SIZE 3
+.Dt CK_RING_CAPACITY 3
 .Sh NAME
-.Nm ck_ring_size
+.Nm ck_ring_capacity
 .Nd returns number of pointer slots in bounded FIFO
 .Sh LIBRARY
 Concurrency Kit (libck, \-lck)