diff --git a/system/popen/Kconfig b/system/popen/Kconfig
index 9d4814bbb..9c7527baa 100644
--- a/system/popen/Kconfig
+++ b/system/popen/Kconfig
@@ -26,8 +26,7 @@ config SYSTEM_POPEN_SHPATH
 
 config SYSTEM_POPEN_STACKSIZE
 	int "Shell stack size"
-	default 2048 if !ARCH_SIM
-	default 4096 if ARCH_SIM
+	default DEFAULT_TASK_STACKSIZE
 	---help---
 		The size of stack allocated for the shell.
 
diff --git a/system/system/Kconfig b/system/system/Kconfig
index 246119716..36be798e4 100644
--- a/system/system/Kconfig
+++ b/system/system/Kconfig
@@ -25,8 +25,7 @@ config SYSTEM_SYSTEM_SHPATH
 
 config SYSTEM_SYSTEM_STACKSIZE
 	int "system stack size"
-	default 2048 if !ARCH_SIM
-	default 4096 if ARCH_SIM
+	default DEFAULT_TASK_STACKSIZE
 	---help---
 		The size of stack allocated for the shell.