Index: kernel/generic/include/proc/thread.h
===================================================================
--- kernel/generic/include/proc/thread.h	(revision 31d8e103d56f8142eb714a22e4d2cbd7e22e5b5a)
+++ kernel/generic/include/proc/thread.h	(revision 69e9dd2f7155aa5c481a39cd38d3d9bc2e03423b)
@@ -251,4 +251,5 @@
 unative_t sys_thread_create(uspace_arg_t *uspace_uarg, char *uspace_name);
 unative_t sys_thread_exit(int uspace_status);
+unative_t sys_thread_get_id(void);
 
 #endif
Index: kernel/generic/include/syscall/syscall.h
===================================================================
--- kernel/generic/include/syscall/syscall.h	(revision 31d8e103d56f8142eb714a22e4d2cbd7e22e5b5a)
+++ kernel/generic/include/syscall/syscall.h	(revision 69e9dd2f7155aa5c481a39cd38d3d9bc2e03423b)
@@ -41,4 +41,5 @@
 	SYS_THREAD_CREATE,
 	SYS_THREAD_EXIT,
+	SYS_THREAD_GET_ID,
 	SYS_TASK_GET_ID,
 	SYS_FUTEX_SLEEP,