diff --git a/configs/metro-m4/nsh/defconfig b/configs/metro-m4/nsh/defconfig
index da3cff0cf8..803fd1cd54 100644
--- a/configs/metro-m4/nsh/defconfig
+++ b/configs/metro-m4/nsh/defconfig
@@ -8,7 +8,6 @@ CONFIG_ARCH_CHIP_SAMD5X=y
 CONFIG_ARCH_STACKDUMP=y
 CONFIG_BOARD_LOOPSPERMSEC=3410
 CONFIG_BUILTIN=y
-CONFIG_CXX_NEWLONG=y
 CONFIG_DISABLE_ENVIRON=y
 CONFIG_DISABLE_POLL=y
 CONFIG_EXAMPLES_NSH=y
@@ -17,7 +16,6 @@ CONFIG_HAVE_CXX=y
 CONFIG_HAVE_CXXINITIALIZE=y
 CONFIG_MAX_TASKS=16
 CONFIG_MAX_WDOGPARMS=2
-CONFIG_MM_REGIONS=3
 CONFIG_NFILE_DESCRIPTORS=8
 CONFIG_NFILE_STREAMS=8
 CONFIG_NSH_BUILTIN_APPS=y