diff --git a/sched/Kconfig b/sched/Kconfig
index 9c4bf2cf88a..47e7a1522e1 100644
--- a/sched/Kconfig
+++ b/sched/Kconfig
@@ -1764,6 +1764,7 @@ config IDLETHREAD_STACKSIZE
 
 config PTHREAD_STACK_MIN
 	int "Minimum pthread stack size"
+	default DEFAULT_TASK_STACKSIZE if ARCH_SIM
 	default 256
 	---help---
 		Minimum pthread stack size