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-rw-r--r--Xext/sync.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/Xext/sync.c b/Xext/sync.c
index 822c205a7..37d41f224 100644
--- a/Xext/sync.c
+++ b/Xext/sync.c
@@ -865,7 +865,7 @@ SyncChangeAlarmAttributes(ClientPtr client, SyncAlarm * pAlarm, Mask mask,
||
(((pAlarm->trigger.test_type == XSyncNegativeComparison) ||
(pAlarm->trigger.test_type == XSyncNegativeTransition))
- && pAlarm->delta >= 0)
+ && pAlarm->delta > 0)
) {
return BadMatch;
}