diff --git a/c/src/exec/posix/headers/threadsup.h b/c/src/exec/posix/headers/threadsup.h
index 23f33be5d5..0adb85fba4 100644
--- a/c/src/exec/posix/headers/threadsup.h
+++ b/c/src/exec/posix/headers/threadsup.h
@@ -7,10 +7,12 @@
 #define __RTEMS_POSIX_THREAD_SUPPORT_h
 
 #include <rtems/score/coresem.h>
+#include <rtems/score/tqdata.h>
 
 typedef struct {
   pthread_attr_t          Attributes;
   int                     detachstate;
+  Thread_queue_Control    Join_List;
 #if 0
   /*
    *  POSIX Interrupts 
diff --git a/c/src/exec/posix/include/rtems/posix/threadsup.h b/c/src/exec/posix/include/rtems/posix/threadsup.h
index 23f33be5d5..0adb85fba4 100644
--- a/c/src/exec/posix/include/rtems/posix/threadsup.h
+++ b/c/src/exec/posix/include/rtems/posix/threadsup.h
@@ -7,10 +7,12 @@
 #define __RTEMS_POSIX_THREAD_SUPPORT_h
 
 #include <rtems/score/coresem.h>
+#include <rtems/score/tqdata.h>
 
 typedef struct {
   pthread_attr_t          Attributes;
   int                     detachstate;
+  Thread_queue_Control    Join_List;
 #if 0
   /*
    *  POSIX Interrupts 
diff --git a/cpukit/posix/include/rtems/posix/threadsup.h b/cpukit/posix/include/rtems/posix/threadsup.h
index 23f33be5d5..0adb85fba4 100644
--- a/cpukit/posix/include/rtems/posix/threadsup.h
+++ b/cpukit/posix/include/rtems/posix/threadsup.h
@@ -7,10 +7,12 @@
 #define __RTEMS_POSIX_THREAD_SUPPORT_h
 
 #include <rtems/score/coresem.h>
+#include <rtems/score/tqdata.h>
 
 typedef struct {
   pthread_attr_t          Attributes;
   int                     detachstate;
+  Thread_queue_Control    Join_List;
 #if 0
   /*
    *  POSIX Interrupts