diff --git a/osal/win32/osal.c b/osal/win32/osal.c
index d744fea7..154cf1c5 100644
--- a/osal/win32/osal.c
+++ b/osal/win32/osal.c
@@ -17,7 +17,6 @@ int osal_getrelativetime(struct timeval *tv, struct timezone *tz)
    int64_t wintime, usecs;
    if(!sysfrequency)
    {
-      timeBeginPeriod(1);
       QueryPerformanceFrequency((LARGE_INTEGER *)&sysfrequency);
       qpc2usec = 1000000.0 / sysfrequency;
    }
diff --git a/oshw/win32/nicdrv.c b/oshw/win32/nicdrv.c
index 9657f31c..92870ded 100644
--- a/oshw/win32/nicdrv.c
+++ b/oshw/win32/nicdrv.c
@@ -89,6 +89,8 @@ static void ecx_clear_rxbufstat(int *rxbufstat)
  */
 int ecx_setupnic(ecx_portt *port, const char *ifname, int secondary)
 {
+   timeBeginPeriod(1);
+   
    int i, rval;
    pcap_t **psock;