diff --git a/boards/arm/nrf53/nrf5340-audio-dk/configs/nsh_cpuapp/defconfig b/boards/arm/nrf53/nrf5340-audio-dk/configs/nsh_cpuapp/defconfig
index 9613fea063..1ea259655e 100644
--- a/boards/arm/nrf53/nrf5340-audio-dk/configs/nsh_cpuapp/defconfig
+++ b/boards/arm/nrf53/nrf5340-audio-dk/configs/nsh_cpuapp/defconfig
@@ -30,7 +30,7 @@ CONFIG_NSH_FILEIOSIZE=512
 CONFIG_NSH_LINELEN=64
 CONFIG_NSH_READLINE=y
 CONFIG_PREALLOC_TIMERS=4
-CONFIG_RAM_SIZE=65535
+CONFIG_RAM_SIZE=524288
 CONFIG_RAM_START=0x20000000
 CONFIG_RAW_BINARY=y
 CONFIG_RR_INTERVAL=200
diff --git a/boards/arm/nrf53/nrf5340-dk/configs/nsh_cpuapp/defconfig b/boards/arm/nrf53/nrf5340-dk/configs/nsh_cpuapp/defconfig
index 44afee4bb3..5deaaf6181 100644
--- a/boards/arm/nrf53/nrf5340-dk/configs/nsh_cpuapp/defconfig
+++ b/boards/arm/nrf53/nrf5340-dk/configs/nsh_cpuapp/defconfig
@@ -30,7 +30,7 @@ CONFIG_NSH_FILEIOSIZE=512
 CONFIG_NSH_LINELEN=64
 CONFIG_NSH_READLINE=y
 CONFIG_PREALLOC_TIMERS=4
-CONFIG_RAM_SIZE=65535
+CONFIG_RAM_SIZE=524288
 CONFIG_RAM_START=0x20000000
 CONFIG_RAW_BINARY=y
 CONFIG_RR_INTERVAL=200