Index: kernel/generic/src/udebug/udebug.c
===================================================================
--- kernel/generic/src/udebug/udebug.c	(revision 55b77d9e6e4dab7c54e9826ca79d2d6a0ddb6d87)
+++ kernel/generic/src/udebug/udebug.c	(revision 43e660cc1a5a90795b49dfc4c510961839c848d3)
@@ -410,8 +410,7 @@
 		
 		mutex_lock(&thread->udebug.lock);
-		unsigned int flags = thread->flags;
 		
 		/* Only process userspace threads. */
-		if ((flags & THREAD_FLAG_USPACE) != 0) {
+		if (thread->uspace) {
 			/* Prevent any further debug activity in thread. */
 			thread->udebug.active = false;