diff --git a/hw/usb/hcd-uhci.c b/hw/usb/hcd-uhci.c
index 25dfc2b15440ef3bd7890df7492b1fc6fdb181c9..fd50be11a35d919a0e4b26f8f5f2572b2b93fe61 100644
--- a/hw/usb/hcd-uhci.c
+++ b/hw/usb/hcd-uhci.c
@@ -78,10 +78,10 @@
 #define NB_PORTS 2
 
 enum {
-    TD_RESULT_STOP_FRAME = -1,
-    TD_RESULT_COMPLETE   = 0,
-    TD_RESULT_NEXT_QH    = 1,
-    TD_RESULT_ASYNC      = 2,
+    TD_RESULT_STOP_FRAME = 10,
+    TD_RESULT_COMPLETE,
+    TD_RESULT_NEXT_QH,
+    TD_RESULT_ASYNC,
 };
 
 typedef struct UHCIState UHCIState;