diff --git a/boards/arm/stm32h7/nucleo-h743zi2/configs/pysim/defconfig b/boards/arm/stm32h7/nucleo-h743zi2/configs/pysim/defconfig
index e7d74e17280..7ed714b934b 100644
--- a/boards/arm/stm32h7/nucleo-h743zi2/configs/pysim/defconfig
+++ b/boards/arm/stm32h7/nucleo-h743zi2/configs/pysim/defconfig
@@ -36,7 +36,6 @@ CONFIG_FS_PROCFS_REGISTER=y
 CONFIG_HAVE_CXX=y
 CONFIG_HAVE_CXXINITIALIZE=y
 CONFIG_INIT_ENTRYPOINT="nsh_main"
-CONFIG_INIT_STACKSIZE=2048
 CONFIG_INTELHEX_BINARY=y
 CONFIG_IOEXPANDER=y
 CONFIG_LIBC_EXECFUNCS=y