diff --git a/configs/sim/ostest/defconfig b/configs/sim/ostest/defconfig
index 607eeeffae9..3df1e283ebe 100644
--- a/configs/sim/ostest/defconfig
+++ b/configs/sim/ostest/defconfig
@@ -111,6 +111,7 @@ CONFIG_SIM_X8664_SYSTEMV=y
 # CONFIG_ARCH_HAVE_COHERENT_DCACHE is not set
 # CONFIG_ARCH_HAVE_ADDRENV is not set
 # CONFIG_ARCH_NEED_ADDRENV_MAPPING is not set
+CONFIG_ARCH_HAVE_MULTICPU=y
 # CONFIG_ARCH_HAVE_VFORK is not set
 # CONFIG_ARCH_HAVE_MMU is not set
 # CONFIG_ARCH_HAVE_MPU is not set
@@ -316,6 +317,7 @@ CONFIG_DEV_NULL=y
 #
 # CONFIG_PCA9635PW is not set
 # CONFIG_MMCSD is not set
+# CONFIG_MODEM is not set
 # CONFIG_MTD is not set
 # CONFIG_EEPROM is not set
 # CONFIG_PIPES is not set
@@ -501,6 +503,7 @@ CONFIG_LIB_SENDFILE_BUFSIZE=512
 #
 # Examples
 #
+# CONFIG_EXAMPLES_CHAT is not set
 # CONFIG_EXAMPLES_CONFIGDATA is not set
 # CONFIG_EXAMPLES_CPUHOG is not set
 # CONFIG_EXAMPLES_DHCPD is not set
@@ -614,4 +617,5 @@ CONFIG_EXAMPLES_OSTEST_WAITRESULT=y
 # CONFIG_SYSTEM_SDCARD is not set
 # CONFIG_SYSTEM_SUDOKU is not set
 # CONFIG_SYSTEM_VI is not set
+# CONFIG_SYSTEM_UBLOXMODEM is not set
 # CONFIG_SYSTEM_ZMODEM is not set