diff --git a/configs/stm32f746-ws/nsh/defconfig b/configs/stm32f746-ws/nsh/defconfig
index 6fafd45558f..5c0a5298200 100644
--- a/configs/stm32f746-ws/nsh/defconfig
+++ b/configs/stm32f746-ws/nsh/defconfig
@@ -312,7 +312,7 @@ CONFIG_STM32F7_OTGFS=y
 # CONFIG_STM32F7_RNG is not set
 # CONFIG_STM32F7_SAI1 is not set
 # CONFIG_STM32F7_SAI2 is not set
-CONFIG_STM32F7_SDMMC1=y
+##CONFIG_STM32F7_SDMMC1=y
 # CONFIG_STM32F7_SPDIFRX is not set
 CONFIG_STM32F7_SPI1=y
 # CONFIG_STM32F7_SPI2 is not set
@@ -416,7 +416,7 @@ CONFIG_BOARD_LOOPSPERMSEC=43103
 # Interrupt options
 #
 CONFIG_ARCH_HAVE_INTERRUPTSTACK=y
-CONFIG_ARCH_INTERRUPTSTACK=600
+CONFIG_ARCH_INTERRUPTSTACK=2600
 CONFIG_ARCH_HAVE_HIPRI_INTERRUPT=y
 # CONFIG_ARCH_HIPRI_INTERRUPT is not set
 
@@ -571,7 +571,7 @@ CONFIG_SCHED_LPWORKSTACKSIZE=1800
 #
 # Stack and heap information
 #
-CONFIG_IDLETHREAD_STACKSIZE=500
+CONFIG_IDLETHREAD_STACKSIZE=2500
 CONFIG_USERMAIN_STACKSIZE=2500
 CONFIG_PTHREAD_STACK_MIN=512
 CONFIG_PTHREAD_STACK_DEFAULT=2048