1 files changed, 2 insertions, 2 deletions
diff --git a/tools/lib/io_timer.c b/tools/lib/io_timer.c
index 4d79a9b..6053ce9 100644
--- a/tools/lib/io_timer.c
+++ b/tools/lib/io_timer.c
@@ -55,9 +55,9 @@ io_time_t   *timer_g;            /* timer: global for stub functions     */
 static double sub_time(struct timeval* a, struct timeval* b)
 {
     return (((double)a->tv_sec +
-     ((double)a->tv_usec) / MICROSECOND) -
+     ((double)a->tv_usec) / (double)MICROSECOND) -
   ((double)b->tv_sec +
-   ((double)b->tv_usec) / MICROSECOND));
+   ((double)b->tv_usec) / (double)MICROSECOND));
 }