diff --git a/hw/timer/omap_gptimer.c b/hw/timer/omap_gptimer.c
index 3a43863042..5e3e8a6d70 100644
--- a/hw/timer/omap_gptimer.c
+++ b/hw/timer/omap_gptimer.c
@@ -133,8 +133,8 @@ static inline void omap_gp_timer_update(struct omap_gp_timer_s *timer)
         timer_mod(timer->timer, timer->time + expires);
 
         if (timer->ce && timer->match_val >= timer->val) {
-            matches = muldiv64(timer->match_val - timer->val,
-                            timer->ticks_per_sec, timer->rate);
+            matches = muldiv64(timer->ticks_per_sec,
+                               timer->match_val - timer->val, timer->rate);
             timer_mod(timer->match, timer->time + matches);
         } else
             timer_del(timer->match);
diff --git a/hw/usb/hcd-ohci.c b/hw/usb/hcd-ohci.c
index 16d9ff7b4b..25cc53fd6d 100644
--- a/hw/usb/hcd-ohci.c
+++ b/hw/usb/hcd-ohci.c
@@ -1474,7 +1474,7 @@ static uint32_t ohci_get_frame_remaining(OHCIState *ohci)
     if (tks >= usb_frame_time)
         return (ohci->frt << 31);
 
-    tks = muldiv64(1, tks, usb_bit_time);
+    tks = muldiv64(tks, 1, usb_bit_time);
     fr = (uint16_t)(ohci->fi - tks);
 
     return (ohci->frt << 31) | fr;