diff --git a/samples/dfu/ab_split/sysbuild.conf b/samples/dfu/ab_split/sysbuild.conf
index 6cb102f8437..aad143a0016 100644
--- a/samples/dfu/ab_split/sysbuild.conf
+++ b/samples/dfu/ab_split/sysbuild.conf
@@ -13,3 +13,6 @@ SB_CONFIG_MCUBOOT_SIGN_MERGED_BINARY=n
 
 # Enable manifest-based updates
 SB_CONFIG_MCUBOOT_MANIFEST_UPDATES=y
+
+# Enable HW-based rollback protection
+SB_CONFIG_MCUBOOT_HARDWARE_DOWNGRADE_PREVENTION=y
diff --git a/samples/dfu/ab_split/sysbuild/mcuboot/prj.conf b/samples/dfu/ab_split/sysbuild/mcuboot/prj.conf
index 4bbe1c8d683..e70bd707267 100644
--- a/samples/dfu/ab_split/sysbuild/mcuboot/prj.conf
+++ b/samples/dfu/ab_split/sysbuild/mcuboot/prj.conf
@@ -36,3 +36,8 @@ CONFIG_RETENTION=y
 CONFIG_BOOT_SHARE_DATA=y
 CONFIG_BOOT_SHARE_DATA_BOOTINFO=y
 CONFIG_BOOT_SHARE_BACKEND_RETENTION=y
+
+# Enable IronSide service
+CONFIG_NRF_IRONSIDE_COUNTER_SERVICE=y
+# Enable MCUboot counter implementation that uses IronSide counters
+CONFIG_NRF_MCUBOOT_IRONSIDE_COUNTERS=y