diff --git a/boards/sim/sim/sim/configs/mirtos/defconfig b/boards/sim/sim/sim/configs/mirtos/defconfig
index bde87e6d423..10263c5ec47 100644
--- a/boards/sim/sim/sim/configs/mirtos/defconfig
+++ b/boards/sim/sim/sim/configs/mirtos/defconfig
@@ -190,6 +190,7 @@ CONFIG_SERVICES_PNS=y
 CONFIG_SETTINGS=y
 CONFIG_SETTINGS_FS_DIR="/data"
 CONFIG_SETTINGS_FS_FILE="/data/zblue.bin"
+CONFIG_SIG_DEFAULT=y
 CONFIG_SIG_EVTHREAD=y
 CONFIG_SIM_FBHEIGHT=480
 CONFIG_SIM_FBWIDTH=640