diff --git a/src/common/sysutils.cpp b/src/common/sysutils.cpp
index 0a13b7e..6f36ae0 100644
--- a/src/common/sysutils.cpp
+++ b/src/common/sysutils.cpp
@@ -150,6 +150,22 @@ system_is_multiprocessor()
     return mp;
 }
 
+#ifdef _WIN32
+
+void gettimeofday(struct timeval *tv, void *tz)
+{
+    union { 
+	long long ns100;  
+	FILETIME ft; 
+    } now; 
+    
+    ::GetSystemTimeAsFileTime(&now.ft); 
+    tv->tv_usec = (long)((now.ns100 / 10LL) % 1000000LL); 
+    tv->tv_sec = (long)((now.ns100 - 116444736000000000LL) / 10000000LL); 
+}
+
+#endif
+
 void system_specific_initialise()
 {
 #if defined HAVE_IPP
diff --git a/src/common/sysutils.h b/src/common/sysutils.h
index c59e1bf..9bcdd9a 100644
--- a/src/common/sysutils.h
+++ b/src/common/sysutils.h
@@ -99,6 +99,11 @@ extern bool system_is_multiprocessor();
 extern void system_specific_initialise();
 extern void system_specific_application_initialise();
 
+#ifdef _WIN32
+struct timeval { long tv_sec; long tv_usec; };
+void gettimeofday(struct timeval *p, void *tz);
+#endif // _WIN32
+
 } // end namespace
 
 // The following should be functions in the RubberBand namespace, really