diff --git a/samples/boards/nrf/system_off/prj.conf b/samples/boards/nrf/system_off/prj.conf
index a57c6919a1e..ffa1571400c 100644
--- a/samples/boards/nrf/system_off/prj.conf
+++ b/samples/boards/nrf/system_off/prj.conf
@@ -1,7 +1,5 @@
 # Required to disable default behavior of deep sleep on timeout
 CONFIG_PM_DEVICE=y
 CONFIG_GPIO=y
-# Optional select RAM retention (nRF52 only)
-#CONFIG_APP_RETENTION=y
 CONFIG_CRC=y
 CONFIG_POWEROFF=y