diff --git a/tests/subsys/nrf_compress/decompression/mcuboot_update/sysbuild.cmake b/tests/subsys/nrf_compress/decompression/mcuboot_update/sysbuild.cmake
index 8f5c5427a8a8..b85599fdcb20 100644
--- a/tests/subsys/nrf_compress/decompression/mcuboot_update/sysbuild.cmake
+++ b/tests/subsys/nrf_compress/decompression/mcuboot_update/sysbuild.cmake
@@ -16,3 +16,9 @@ set_config_string(compressed_app CONFIG_MCUBOOT_SIGNATURE_KEY_FILE
 set_config_bool(compressed_app CONFIG_MCUBOOT_BOOTLOADER_MODE_OVERWRITE_ONLY y)
 set(compressed_app_SIGNING_SCRIPT "${CMAKE_CURRENT_LIST_DIR}/modified_signing.cmake" CACHE INTERNAL "MCUboot signing script" FORCE)
 set_config_bool(compressed_app CONFIG_MCUBOOT_COMPRESSED_IMAGE_SUPPORT_ENABLED y)
+
+if(SB_CONFIG_SOC_SERIES_NRF54LX AND SB_CONFIG_BOOT_SIGNATURE_TYPE_ED25519)
+  set_config_bool(compressed_app CONFIG_MCUBOOT_BOOTLOADER_SIGNATURE_TYPE_ED25519 y)
+  set_config_bool(compressed_app CONFIG_MCUBOOT_BOOTLOADER_USES_SHA512 y)
+  set_config_bool(compressed_app CONFIG_MCUBOOT_BOOTLOADER_SIGNATURE_TYPE_PURE n)
+endif()