diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig
index d7f9839..c5fc6ef 100644
--- a/drivers/acpi/Kconfig
+++ b/drivers/acpi/Kconfig
@@ -9,6 +9,7 @@
 	depends on PCI
 	depends on PM
 	select PNP
+	select CPU_IDLE
 	default y
 	---help---
 	  Advanced Configuration and Power Interface (ACPI) support for