diff --git a/drivers/usb/usbftdi/linkedlist.inc b/drivers/usb/usbftdi/linkedlist.inc
index 7b4886274..dffbb7845 100644
--- a/drivers/usb/usbftdi/linkedlist.inc
+++ b/drivers/usb/usbftdi/linkedlist.inc
@@ -46,11 +46,10 @@ linkedlist_delete:
 	ret
     
 linkedlist_isvalid:       ;eax - pointer to check; returns zero if valid
-    inc   ecx
-    test  eax, eax
-    jz    .valid_pointer  ;actually, poiner is not valid
     push  ebx ecx
     xor   ecx, ecx
+    test  eax, eax
+    jz    .invalid_pointer 
     mov   ebx, [head]
   .next_check:
     cmp   eax, ebx
diff --git a/drivers/usb/usbftdi/usbftdi.asm b/drivers/usb/usbftdi/usbftdi.asm
index c0a64900a..8f81dd711 100644
--- a/drivers/usb/usbftdi/usbftdi.asm
+++ b/drivers/usb/usbftdi/usbftdi.asm
@@ -22,10 +22,10 @@ __DEBUG_LEVEL__ = 1
 node equ ftdi_context
 node.next equ ftdi_context.next_context
 
-include '../proc32.inc'
-include '../imports.inc'
-include '../fdo.inc'
-include '../struct.inc'
+include '../../proc32.inc'
+include '../../imports.inc'
+include '../../fdo.inc'
+include '../../struct.inc'
 
 public START
 public version