Index: generic/include/proc/thread.h
===================================================================
--- generic/include/proc/thread.h	(revision 5c9a08b46f360925ecb95360eb2b35b88a5f8087)
+++ generic/include/proc/thread.h	(revision bfb87dfa5a2db236f9520a16f8ba1d59d1d9c11c)
@@ -112,5 +112,4 @@
 
 	__u8 *kstack;				/**< Thread's kernel stack. */
-	__u8 *ustack;				/**< Thread's user stack. */
 };