diff --git a/drivers/acpi/sleep/main.c b/drivers/acpi/sleep/main.c
index c7f0c9cd87018c442da609f4fbcfb32f516a983e..5419938ef297a9e96dbbb95aaef165a9ad76cd71 100644
--- a/drivers/acpi/sleep/main.c
+++ b/drivers/acpi/sleep/main.c
@@ -233,6 +233,8 @@ static int acpi_suspend_enter(suspend_state_t pm_state)
 		break;
 	}
 
+	/* If ACPI is not enabled by the BIOS, we need to enable it here. */
+	acpi_enable();
 	/* Reprogram control registers and execute _BFS */
 	acpi_leave_sleep_state_prep(acpi_state);