diff --git a/src/v4l2-relayd.c b/src/v4l2-relayd.c
index 21bb0d5..cfc9e27 100644
--- a/src/v4l2-relayd.c
+++ b/src/v4l2-relayd.c
@@ -27,7 +27,10 @@
 #include <gst/app/gstappsrc.h>
 #include <gst/video/video-info.h>
 
-#define V4L2_EVENT_PRI_CLIENT_USAGE  V4L2_EVENT_PRIVATE_START
+#define V4L2LOOPBACK_EVENT_BASE (V4L2_EVENT_PRIVATE_START)
+#define V4L2LOOPBACK_EVENT_OFFSET 0x08E00000
+#define V4L2_EVENT_PRI_CLIENT_USAGE \
+	(V4L2LOOPBACK_EVENT_BASE + V4L2LOOPBACK_EVENT_OFFSET + 1)
 
 struct v4l2_event_client_usage {
   __u32 count;