diff --git a/components/drivers/Kconfig b/components/drivers/Kconfig
index 6b57ff00c3..c2e6d3a411 100755
--- a/components/drivers/Kconfig
+++ b/components/drivers/Kconfig
@@ -125,7 +125,6 @@ config RT_USING_PM
 
 config RT_USING_RTC
     bool "Using RTC device drivers"
-    select RT_USING_LIBC
     default n
 
     if RT_USING_RTC
diff --git a/components/utilities/Kconfig b/components/utilities/Kconfig
index 250239aea6..9a50512989 100644
--- a/components/utilities/Kconfig
+++ b/components/utilities/Kconfig
@@ -146,7 +146,6 @@ config RT_USING_ULOG
             config ULOG_TIME_USING_TIMESTAMP
                 bool "Enable timestamp format for time."
                 default n
-                select RT_USING_LIBC
                 depends on ULOG_OUTPUT_TIME
 
             config ULOG_OUTPUT_LEVEL