diff --git a/src/Kconfig b/src/Kconfig
index b35bcd2e68d..dc1d4564de7 100644
--- a/src/Kconfig
+++ b/src/Kconfig
@@ -441,6 +441,7 @@ config RT_USING_CONSOLE
 if RT_USING_CONSOLE
     config RT_CONSOLEBUF_SIZE
         int "the buffer size for console log printf"
+        range 256 2147483647 if RT_USING_UTEST
         default 256 if RT_USING_UTEST
         default 128