diff --git a/Kconfig b/Kconfig
index d085295eb5192..d20c362fa9b69 100644
--- a/Kconfig
+++ b/Kconfig
@@ -29,6 +29,7 @@ config DEFAULT_SMALL
 
 config DEFAULT_TASK_STACKSIZE
 	int "The default stack size for tasks"
+	default 8192 if ARCH_SIM
 	default 2048
 	---help---
 		The default stack size for tasks.