diff --git a/src/backend/access/transam/xlog.c b/src/backend/access/transam/xlog.c
index 26c9ef3..2f8bf66 100644
--- a/src/backend/access/transam/xlog.c
+++ b/src/backend/access/transam/xlog.c
@@ -2936,7 +2936,10 @@ XLogFileReadAnyTLI(uint32 log, uint32 seg, int emode, int sources)
		{
			fd = XLogFileRead(log, seg, emode, tli, XLOG_FROM_PG_XLOG, true);
			if (fd != -1)
+			{
+				elog(DEBUG1, "got WAL segment from pg_xlog");
				return fd;
+			}
		}
	}