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-rw-r--r--rts/posix/Select.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/rts/posix/Select.c b/rts/posix/Select.c
index 99a9508507..d638829fc9 100644
--- a/rts/posix/Select.c
+++ b/rts/posix/Select.c
@@ -45,7 +45,7 @@
#if SIZEOF_VOID_P == 4
#define LowResTimeToTime(t) (USToTime((t) * 1000))
-#define TimeToLowResTimeRoundDown(t) (TimeToUS(t) / 1000)
+#define TimeToLowResTimeRoundDown(t) ((LowResTime)(TimeToUS(t) / 1000))
#define TimeToLowResTimeRoundUp(t) ((TimeToUS(t) + 1000-1) / 1000)
#else
#define LowResTimeToTime(t) (t)