diff --git a/man7/pthreads.7 b/man7/pthreads.7
index cd56b0edc..8466860bd 100644
--- a/man7/pthreads.7
+++ b/man7/pthreads.7
@@ -771,7 +771,7 @@ likely to occur.)
 .SS NPTL
 With NPTL, all of the threads in a process are placed
 in the same thread group;
-all members of a thread groups share the same PID.
+all members of a thread group share the same PID.
 NPTL does not employ a manager thread.
 NPTL makes internal use of the first two real-time signals
 (see also