diff --git a/rt-thread/components/utilities/ulog/ulog.c b/rt-thread/components/utilities/ulog/ulog.c
index 390f0b5..546715b 100644
--- a/rt-thread/components/utilities/ulog/ulog.c
+++ b/rt-thread/components/utilities/ulog/ulog.c
@@ -663,7 +663,7 @@ void elog_output(uint8_t level, const char *tag, const char *file, const char *f
 {
     va_list args;
     static char line_buffer[256] = {0};
-    rt_snprintf(line_buffer, sizeof(line_buffer), "[%s:%s:%d] %s", file, func, line, format);
+    rt_snprintf(line_buffer, sizeof(line_buffer), "%s", format);
 
     /* args point to the first variable parameter */
     va_start(args, format);