diff --git a/timing.c b/timing.c
index 3a5f5c7..25876d6 100644
--- a/timing.c
+++ b/timing.c
@@ -102,7 +102,7 @@ SP_PRIV unsigned int time_as_ms(const struct time *time)
 #ifdef _WIN32
 	LARGE_INTEGER frequency;
 	QueryPerformanceFrequency(&frequency);
-	return time->ticks / (frequency.QuadPart / 1000);
+	return (unsigned int) (time->ticks / (frequency.QuadPart / 1000));
 #else
 	return time->tv.tv_sec * 1000 + time->tv.tv_usec / 1000;
 #endif