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-rw-r--r--dix/getevents.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/dix/getevents.c b/dix/getevents.c
index 8057e6296..4845a106c 100644
--- a/dix/getevents.c
+++ b/dix/getevents.c
@@ -218,7 +218,7 @@ CreateClassesChangedEvent(InternalEvent* event,
dce = &event->changed_event;
memset(dce, 0, sizeof(DeviceChangedEvent));
dce->deviceid = slave->id;
- dce->masterid = master->id;
+ dce->masterid = master ? master->id : 0;
dce->header = ET_Internal;
dce->length = sizeof(DeviceChangedEvent);
dce->type = ET_DeviceChanged;