diff --git a/demo/os/linux/easylogger/inc/elog_cfg.h b/demo/os/linux/easylogger/inc/elog_cfg.h
index 9b1c1b5..31e9faf 100644
--- a/demo/os/linux/easylogger/inc/elog_cfg.h
+++ b/demo/os/linux/easylogger/inc/elog_cfg.h
@@ -48,7 +48,7 @@
 /* enable asynchronous output mode */
 #define ELOG_ASYNC_OUTPUT_ENABLE
 /* buffer size for asynchronous output mode */
-#define ELOG_ASYNC_OUTPUT_BUF_SIZE           (LOG_LINE_BUF_SIZE * 100)
+#define ELOG_ASYNC_OUTPUT_BUF_SIZE           (ELOG_LINE_BUF_SIZE * 100)
 /* asynchronous output mode using POSIX pthread implementation */
 #define ELOG_ASYNC_OUTPUT_USING_PTHREAD