diff --git a/include/linux/kernel.h b/include/linux/kernel.h
index e07f5e0..6043821 100644
--- a/include/linux/kernel.h
+++ b/include/linux/kernel.h
@@ -377,7 +377,6 @@
 	SYSTEM_HALT,
 	SYSTEM_POWER_OFF,
 	SYSTEM_RESTART,
-	SYSTEM_SUSPEND_DISK,
 } system_state;
 
 #define TAINT_PROPRIETARY_MODULE	0