diff --git a/boards/sim/sim/sim/configs/wamr/defconfig b/boards/sim/sim/sim/configs/wamr/defconfig
index 67a58c0dce..174f4bd9e4 100644
--- a/boards/sim/sim/sim/configs/wamr/defconfig
+++ b/boards/sim/sim/sim/configs/wamr/defconfig
@@ -58,7 +58,6 @@ CONFIG_LIBC_LOCALE_GETTEXT=y
 CONFIG_LIBC_MAX_EXITFUNS=1
 CONFIG_LIBC_NUMBERED_ARGS=y
 CONFIG_LIBM=y
-CONFIG_MM_IOB=y
 CONFIG_NET=y
 CONFIG_NET_BINDTODEVICE=y
 CONFIG_NET_SOCKOPTS=y