diff --git a/tests/boot/mcuboot_data_sharing/src/main.c b/tests/boot/mcuboot_data_sharing/src/main.c
index f26da710fa1..66db1eebac5 100644
--- a/tests/boot/mcuboot_data_sharing/src/main.c
+++ b/tests/boot/mcuboot_data_sharing/src/main.c
@@ -16,7 +16,7 @@
 #define FLASH_SECTOR_SIZE 1024
 #define FLASH_SECTOR_SIZE_KB 4
 #define FLASH_MAX_APP_SECTORS 34
-#define FLASH_RESERVED_SECTORS 1
+#define FLASH_RESERVED_SECTORS 2
 #define FLASH_MAX_APP_SIZE ((FLASH_MAX_APP_SECTORS - FLASH_RESERVED_SECTORS) \
 			    * FLASH_SECTOR_SIZE_KB)
 #define RUNNING_SLOT 0
diff --git a/tests/boot/mcuboot_data_sharing/sysbuild/mcuboot/prj.conf b/tests/boot/mcuboot_data_sharing/sysbuild/mcuboot/prj.conf
index 102bd1bc1bf..c9435c47cd9 100644
--- a/tests/boot/mcuboot_data_sharing/sysbuild/mcuboot/prj.conf
+++ b/tests/boot/mcuboot_data_sharing/sysbuild/mcuboot/prj.conf
@@ -5,3 +5,4 @@ CONFIG_BOOT_SHARE_DATA_BOOTINFO=y
 CONFIG_BOOT_SHARE_BACKEND_RETENTION=y
 CONFIG_FLASH=y
 CONFIG_FLASH_MAP=y
+CONFIG_BOOT_MAX_IMG_SECTORS_AUTO=n