diff --git a/man7/pid_namespaces.7 b/man7/pid_namespaces.7
index 209010133..8582da32f 100644
--- a/man7/pid_namespaces.7
+++ b/man7/pid_namespaces.7
@@ -70,7 +70,7 @@ to this process rather than
 (unless one of the ancestors of the child
 in the same PID namespace employed the
 .BR prctl (2)
-.B PR_GET_CHILD_SUBREAPER
+.B PR_SET_CHILD_SUBREAPER
 command to mark itself as the reaper of orphaned descendant processes).
 
 If the "init" process of a PID namespace terminates,