diff --git a/nuttx-configs/px4fmu-v2/nsh/defconfig b/nuttx-configs/px4fmu-v2/nsh/defconfig
index 7d5e6e9df5..a55c95a291 100644
--- a/nuttx-configs/px4fmu-v2/nsh/defconfig
+++ b/nuttx-configs/px4fmu-v2/nsh/defconfig
@@ -451,8 +451,8 @@ CONFIG_PREALLOC_TIMERS=50
 #
 # Stack and heap information
 #
-CONFIG_IDLETHREAD_STACKSIZE=6000
-CONFIG_USERMAIN_STACKSIZE=4096
+CONFIG_IDLETHREAD_STACKSIZE=3500
+CONFIG_USERMAIN_STACKSIZE=3000
 CONFIG_PTHREAD_STACK_MIN=512
 CONFIG_PTHREAD_STACK_DEFAULT=2048