diff --git a/kernel/trunk/const.inc b/kernel/trunk/const.inc
index 894553aac..f45398903 100644
--- a/kernel/trunk/const.inc
+++ b/kernel/trunk/const.inc
@@ -258,8 +258,6 @@ SLOT_BASE           = OS_BASE + 0x0080000
 
 VGABasePtr          = OS_BASE + 0x00A0000
 
-UPPER_KERNEL_PAGES  = OS_BASE + 0x0400000
-
 virtual at            OS_BASE + 0x05FFF80
   tss  TSS
 end virtual
diff --git a/kernel/trunk/gui/window.inc b/kernel/trunk/gui/window.inc
index 9bbedb941..5eb1f55f3 100644
--- a/kernel/trunk/gui/window.inc
+++ b/kernel/trunk/gui/window.inc
@@ -1974,9 +1974,9 @@ align 4
 ;--------------------------------------
 align 4
 .move_others_down:
-        ; ax <- process no
+        ; bx <- process no
         movzx   ebx, word[esi]
-        ; ax <- position in window stack
+        ; bx <- position in window stack
         movzx   ebx, word[WIN_STACK + ebx * 2]
 
         ; drop others