diff --git a/lib/cpp/Makefile.am b/lib/cpp/Makefile.am
index 1d79b5b..822a2c7 100644
--- a/lib/cpp/Makefile.am
+++ b/lib/cpp/Makefile.am
@@ -10,6 +10,7 @@
 
 libconcurrency_inst_headers = src/concurrency/Exception.h \
                               src/concurrency/Monitor.h \
+                              src/concurrency/PosixThreadFactory.h \
                               src/concurrency/Thread.h \
                               src/concurrency/ThreadManager.h \
                               src/concurrency/TimerManager.h