diff --git a/samples/subsys/usb/dfu/sysbuild.conf b/samples/subsys/usb/dfu/sysbuild.conf
new file mode 100644
index 00000000000..47f00ff3cff
--- /dev/null
+++ b/samples/subsys/usb/dfu/sysbuild.conf
@@ -0,0 +1 @@
+SB_CONFIG_BOOTLOADER_MCUBOOT=y
diff --git a/tests/drivers/flash/common/sysbuild.conf b/tests/drivers/flash/common/sysbuild.conf
deleted file mode 100644
index 6408669a847..00000000000
--- a/tests/drivers/flash/common/sysbuild.conf
+++ /dev/null
@@ -1 +0,0 @@
-SB_CONFIG_PARTITION_MANAGER=n