diff --git a/src/afs/afs_osi.h b/src/afs/afs_osi.h
index 5f6588b031..488334a525 100644
--- a/src/afs/afs_osi.h
+++ b/src/afs/afs_osi.h
@@ -185,7 +185,7 @@ typedef struct timeval osi_timeval_t;
  */
 #ifdef AFS_FBSD50_ENV
 /* should use curthread, but 'ps' can't display it */
-#define osi_ThreadUnique()	curproc
+#define osi_ThreadUnique()	(curproc->p_pid)
 #elif defined(AFS_LINUX_ENV)
 #define osi_ThreadUnique()	(current->pid)
 #elif defined(UKERNEL)