diff --git a/config/telink/chip-module/CMakeLists.txt b/config/telink/chip-module/CMakeLists.txt
index 27df0bbe585900..e4cecfc33a7bcb 100644
--- a/config/telink/chip-module/CMakeLists.txt
+++ b/config/telink/chip-module/CMakeLists.txt
@@ -195,7 +195,7 @@ if (CONFIG_BOOTLOADER_MCUBOOT)
     if (CONFIG_SOC_SERIES_RISCV_TELINK_W91)
         add_custom_target(sign_image ALL
             COMMAND
-            west sign -t imgtool -d ${PROJECT_BINARY_DIR}/.. -- --key ${PROJECT_BINARY_DIR}/mcuboot_key.pem # root-rsa-2048.pem
+            west sign -t imgtool -d ${PROJECT_BINARY_DIR}/.. -- --key ${ZEPHYR_BASE}/../${CONFIG_MCUBOOT_SIGNATURE_KEY_FILE}
         )
         add_dependencies(sign_image merge_n22)
         add_dependencies(merge_mcuboot sign_image)
diff --git a/config/telink/chip-module/Kconfig b/config/telink/chip-module/Kconfig
index ab851e7f6be895..5a8d435b3d8697 100644
--- a/config/telink/chip-module/Kconfig
+++ b/config/telink/chip-module/Kconfig
@@ -46,7 +46,7 @@ config BOOTLOADER_MCUBOOT
 	select IMG_MANAGER
 	select STREAM_FLASH
 	select STREAM_FLASH_ERASE
-	select TELINK_W91_MATTER_OTA_LAYOUT if BOARD_TLSR9118BDK40D
+	select TELINK_W91_N22_MATTER_OTA_LAYOUT if BOARD_TLSR9118BDK40D
 
 config CHIP_OTA_REQUESTOR_BUFFER_SIZE
 	int "OTA Requestor image buffer size"
diff --git a/config/telink/chip-module/Kconfig.defaults b/config/telink/chip-module/Kconfig.defaults
index 80d07150f291d9..ec14989d87ce3f 100644
--- a/config/telink/chip-module/Kconfig.defaults
+++ b/config/telink/chip-module/Kconfig.defaults
@@ -192,6 +192,10 @@ config DYNAMIC_INTERRUPTS
 config CHIP_OTA_REQUESTOR
     default y
 
+config MCUBOOT_SIGNATURE_KEY_FILE
+	default "bootloader/mcuboot/root-ec-p256.pem" if BOARD_TLSR9118BDK40D
+	depends on BOOTLOADER_MCUBOOT
+
 # In current config/zephyr/Kconfig
 # next deprecated values are selected
 # warning: Deprecated symbol CPLUSPLUS is enabled.