diff --git a/configs/z80sim/nsh/defconfig b/configs/z80sim/nsh/defconfig
index b184e83fe3..703f6452c9 100644
--- a/configs/z80sim/nsh/defconfig
+++ b/configs/z80sim/nsh/defconfig
@@ -24,7 +24,6 @@ CONFIG_DISABLE_MQUEUE=y
 CONFIG_DISABLE_POLL=y
 CONFIG_DISABLE_PTHREAD=y
 CONFIG_EXAMPLES_NSH=y
-CONFIG_HOST_WINDOWS=y
 CONFIG_MAX_TASKS=8
 CONFIG_MAX_WDOGPARMS=2
 CONFIG_NFILE_DESCRIPTORS=6
@@ -49,4 +48,3 @@ CONFIG_UART_TXBUFSIZE=64
 CONFIG_USER_ENTRYPOINT="nsh_main"
 CONFIG_USERMAIN_STACKSIZE=1024
 CONFIG_WDOG_INTRESERVE=0
-CONFIG_WINDOWS_NATIVE=y
diff --git a/configs/z80sim/pashello/defconfig b/configs/z80sim/pashello/defconfig
index 2d028123eb..0f5cacf7d3 100644
--- a/configs/z80sim/pashello/defconfig
+++ b/configs/z80sim/pashello/defconfig
@@ -13,7 +13,6 @@ CONFIG_DISABLE_POLL=y
 CONFIG_DISABLE_PTHREAD=y
 CONFIG_DISABLE_SIGNALS=y
 CONFIG_EXAMPLES_PASHELLO=y
-CONFIG_HOST_WINDOWS=y
 CONFIG_INTERPRETERS_PCODE=y
 CONFIG_MAX_TASKS=8
 CONFIG_MAX_WDOGPARMS=2
@@ -39,4 +38,3 @@ CONFIG_UART_TXBUFSIZE=64
 CONFIG_USER_ENTRYPOINT="pashello_main"
 CONFIG_USERMAIN_STACKSIZE=1024
 CONFIG_WDOG_INTRESERVE=0
-CONFIG_WINDOWS_NATIVE=y