diff --git a/bsp/stm32/stm32wb55-st-nucleo/.config b/bsp/stm32/stm32wb55-st-nucleo/.config
index 6ed0e594ba..fefa10fef8 100644
--- a/bsp/stm32/stm32wb55-st-nucleo/.config
+++ b/bsp/stm32/stm32wb55-st-nucleo/.config
@@ -108,6 +108,7 @@ CONFIG_FINSH_ARG_MAX=10
 #
 # Device virtual file system
 #
+# CONFIG_RT_USING_DFS is not set
 
 #
 # Device Drivers
@@ -152,11 +153,7 @@ CONFIG_RT_USING_PIN=y
 #
 CONFIG_RT_USING_LIBC=y
 # CONFIG_RT_USING_PTHREADS is not set
-CONFIG_RT_USING_POSIX=y
-# CONFIG_RT_USING_POSIX_MMAP is not set
-# CONFIG_RT_USING_POSIX_TERMIOS is not set
-# CONFIG_RT_USING_POSIX_GETLINE is not set
-# CONFIG_RT_USING_POSIX_AIO is not set
+
 # CONFIG_RT_USING_MODULE is not set
 
 #