diff --git a/configs/nutiny-nuc120/ostest/defconfig b/configs/nutiny-nuc120/ostest/defconfig
index c7280484cd3..3256fb1eb30 100644
--- a/configs/nutiny-nuc120/ostest/defconfig
+++ b/configs/nutiny-nuc120/ostest/defconfig
@@ -272,7 +272,7 @@ CONFIG_SIG_SIGCONDTIMEDOUT=16
 #
 # Sizes of configurable things (0 disables)
 #
-CONFIG_MAX_TASKS=16
+CONFIG_MAX_TASKS=8
 CONFIG_MAX_TASK_ARGS=4
 CONFIG_NPTHREAD_KEYS=4
 CONFIG_NFILE_DESCRIPTORS=8
@@ -288,9 +288,9 @@ CONFIG_PREALLOC_TIMERS=4
 # Stack and heap information
 #
 CONFIG_IDLETHREAD_STACKSIZE=1024
-CONFIG_USERMAIN_STACKSIZE=2048
+CONFIG_USERMAIN_STACKSIZE=1536
 CONFIG_PTHREAD_STACK_MIN=256
-CONFIG_PTHREAD_STACK_DEFAULT=2048
+CONFIG_PTHREAD_STACK_DEFAULT=1536
 
 #
 # Device Drivers
@@ -397,7 +397,7 @@ CONFIG_SYMTAB_ORDEREDBYNAME=y
 #
 # Standard C Library Options
 #
-CONFIG_STDIO_BUFFER_SIZE=64
+CONFIG_STDIO_BUFFER_SIZE=0
 CONFIG_STDIO_LINEBUFFER=y
 CONFIG_NUNGET_CHARS=2
 # CONFIG_LIBM is not set
@@ -409,7 +409,7 @@ CONFIG_NUNGET_CHARS=2
 CONFIG_EOL_IS_EITHER_CRLF=y
 # CONFIG_LIBC_EXECFUNCS is not set
 CONFIG_POSIX_SPAWN_PROXY_STACKSIZE=1024
-CONFIG_TASK_SPAWN_DEFAULT_STACKSIZE=2048
+CONFIG_TASK_SPAWN_DEFAULT_STACKSIZE=1536
 # CONFIG_LIBC_STRERROR is not set
 # CONFIG_LIBC_PERROR_STDOUT is not set
 CONFIG_ARCH_LOWPUTC=y
@@ -469,7 +469,7 @@ CONFIG_LIB_SENDFILE_BUFSIZE=512
 CONFIG_EXAMPLES_OSTEST=y
 # CONFIG_EXAMPLES_OSTEST_BUILTIN is not set
 CONFIG_EXAMPLES_OSTEST_LOOPS=1
-CONFIG_EXAMPLES_OSTEST_STACKSIZE=2048
+CONFIG_EXAMPLES_OSTEST_STACKSIZE=1536
 CONFIG_EXAMPLES_OSTEST_NBARRIER_THREADS=3
 CONFIG_EXAMPLES_OSTEST_RR_RANGE=10000
 CONFIG_EXAMPLES_OSTEST_RR_RUNS=10
@@ -493,10 +493,6 @@ CONFIG_EXAMPLES_OSTEST_RR_RUNS=10
 # CONFIG_EXAMPLES_USBTERM is not set
 # CONFIG_EXAMPLES_WATCHDOG is not set
 
-#
-# Interpreters
-#
-
 #
 # Interpreters
 #
@@ -524,10 +520,6 @@ CONFIG_EXAMPLES_OSTEST_RR_RUNS=10
 # CONFIG_NETUTILS_UIPLIB is not set
 # CONFIG_NETUTILS_WEBCLIENT is not set
 
-#
-# ModBus
-#
-
 #
 # FreeModbus
 #