diff --git a/miosix/config/Makefile.inc b/miosix/config/Makefile.inc
index b6faf84..4de9ebd 100644
--- a/miosix/config/Makefile.inc
+++ b/miosix/config/Makefile.inc
@@ -13,12 +13,12 @@
 ## architecture
 ##
 #OPT_BOARD := lpc2138_miosix_board
-OPT_BOARD := stm32f103ze_stm3210e-eval
+#OPT_BOARD := stm32f103ze_stm3210e-eval
 #OPT_BOARD := stm32f103ve_mp3v2
 #OPT_BOARD := stm32f100rb_stm32vldiscovery
 #OPT_BOARD := stm32f103ve_strive_mini
 #OPT_BOARD := stm32f103ze_redbull_v2
-#OPT_BOARD := stm32f407vg_stm32f4discovery
+OPT_BOARD := stm32f407vg_stm32f4discovery
 #OPT_BOARD := stm32f207ig_stm3220g-eval
 #OPT_BOARD := stm32f207zg_ethboard_v2
 
@@ -39,7 +39,7 @@ OPT_OPTIMIZATION := -O2
 ## implicitly uses it) uncomment this option.
 ## the -D__NO_EXCEPTIONS is used by Miosix to know if exceptions are used.
 ##
-#OPT_EXCEPT := -fno-exceptions -fno-rtti -D__NO_EXCEPTIONS
+OPT_EXCEPT := -fno-exceptions -fno-rtti -D__NO_EXCEPTIONS
 
 #############################################################################
 ## Board specific options
diff --git a/miosix/config/miosix_settings.h b/miosix/config/miosix_settings.h
index 879e442..911f483 100644
--- a/miosix/config/miosix_settings.h
+++ b/miosix/config/miosix_settings.h
@@ -69,7 +69,7 @@ namespace miosix {
 /// \def WITH_FILESYSTEM
 /// Allows to enable/disable filesystem support.
 /// By default it is defined (filesystem support is enabled)
-#define WITH_FILESYSTEM
+//#define WITH_FILESYSTEM
     
 /// \def SYNC_AFTER_WRITE
 /// Increases filesystem write robustness. After each write operation the