diff --git a/arch/arc/Kconfig b/arch/arc/Kconfig
index b9e59adc498224e..debcddb0a134f3a 100644
--- a/arch/arc/Kconfig
+++ b/arch/arc/Kconfig
@@ -387,6 +387,7 @@ endmenu
 
 config MAIN_STACK_SIZE
 	default 4096 if 64BIT
+	default 768 if !64BIT && "$(ZEPHYR_TOOLCHAIN_VARIANT)" = "arcmwdt"
 
 config ISR_STACK_SIZE
 	default 4096 if 64BIT