diff --git a/subsys/storage/flash_map/flash_map_mcumgr.c b/subsys/storage/flash_map/flash_map_mcumgr.c
index 4cb17578e9..18a98550ad 100644
--- a/subsys/storage/flash_map/flash_map_mcumgr.c
+++ b/subsys/storage/flash_map/flash_map_mcumgr.c
@@ -15,12 +15,14 @@ const struct flash_area default_flash_map[] = {
 		.fa_size = FIXED_PARTITION_SIZE(slot0_partition),
 		.fa_dev = DEVICE_DT_GET(DT_CHOSEN(zephyr_flash_controller)),
 	},
+#ifndef CONFIG_MCUBOOT_APPLICATION_FIRMWARE_UPDATER
 	{
 		.fa_id = 2,
 		.fa_off = FIXED_PARTITION_OFFSET(slot1_partition),
 		.fa_size = FIXED_PARTITION_SIZE(slot1_partition),
 		.fa_dev = DEVICE_DT_GET(DT_CHOSEN(zephyr_flash_controller)),
 	},
+#endif
 };
 
 const int flash_map_entries = ARRAY_SIZE(default_flash_map);