diff --git a/hw/usb/hcd-ehci.c b/hw/usb/hcd-ehci.c
index 34f7538066..be02308242 100644
--- a/hw/usb/hcd-ehci.c
+++ b/hw/usb/hcd-ehci.c
@@ -2149,11 +2149,15 @@ static void ehci_frame_timer(void *opaque)
         if ( !(ehci->usbsts & USBSTS_HALT)) {
             ehci->frindex += 8;
 
-            if (ehci->frindex > 0x00001fff) {
-                ehci->frindex = 0;
+            if (ehci->frindex == 0x00002000) {
                 ehci_set_interrupt(ehci, USBSTS_FLR);
             }
 
+            if (ehci->frindex == 0x00004000) {
+                ehci_set_interrupt(ehci, USBSTS_FLR);
+                ehci->frindex = 0;
+            }
+
             ehci->sofv = (ehci->frindex - 1) >> 3;
             ehci->sofv &= 0x000003ff;
         }