diff --git a/doc/nrf-bm/app_dev/dfu/memory_partitioning.rst b/doc/nrf-bm/app_dev/dfu/memory_partitioning.rst
index 4d87b7c175..efe3e31359 100644
--- a/doc/nrf-bm/app_dev/dfu/memory_partitioning.rst
+++ b/doc/nrf-bm/app_dev/dfu/memory_partitioning.rst
@@ -149,7 +149,7 @@ The recommended sizes are based on the configuration used in |BMshort|.
 Optimizing your project for release
 ***********************************
 
-You can achieve the reference sizes of MCUboot and firmware loader using the default configuration of the :ref:`ble_mcuboot_recovery_entry_sample` sample.
+You can achieve the reference sizes of MCUboot and firmware loader using configurations of the :ref:`ble_mcuboot_recovery_entry_sample` sample.
 
 For minimal size, amend the firmware loader configuration using the following Kconfig options:
 
diff --git a/samples/boot/mcuboot_recovery_entry/README.rst b/samples/boot/mcuboot_recovery_entry/README.rst
index 5901189180..73a099af0c 100644
--- a/samples/boot/mcuboot_recovery_entry/README.rst
+++ b/samples/boot/mcuboot_recovery_entry/README.rst
@@ -57,6 +57,8 @@ Building and running
 ********************
 
 This sample can be found under :file:`samples/boot/mcuboot_recovery_entry/` in the |BMshort| folder structure.
+The sample contains the default configuration and DFU components size optimized configuration for reference.
+To enable size optimized configuration, set :makevar:`FILE_SUFFIX` to ``size_opt`` when building the sample.
 
 For details on how to create, configure, and program a sample, see :ref:`getting_started_with_the_samples`.