diff --git a/src/system/kernel/posix/Jamfile b/src/system/kernel/posix/Jamfile
index c1dde194b8..1eb2f51471 100644
--- a/src/system/kernel/posix/Jamfile
+++ b/src/system/kernel/posix/Jamfile
@@ -4,6 +4,7 @@ UsePrivateHeaders shared ;
 
 KernelMergeObject kernel_posix.o : 
 	realtime_sem.cpp
+	xsi_message_queue.cpp
 	xsi_semaphore.cpp
 
 	: $(TARGET_KERNEL_PIC_CCFLAGS)
diff --git a/src/system/libroot/posix/sys/Jamfile b/src/system/libroot/posix/sys/Jamfile
index 206120a090..157a4e52af 100644
--- a/src/system/libroot/posix/sys/Jamfile
+++ b/src/system/libroot/posix/sys/Jamfile
@@ -24,5 +24,6 @@ MergeObject posix_sys.o :
  	uname.c
  	utimes.c
 	wait.c
+	xsi_msg_queue.cpp
 	xsi_sem.cpp
 ;