diff --git a/kernel/rcu/tree.h b/kernel/rcu/tree.h
index be6d1e8eeb79..674ebbc3e406 100644
--- a/kernel/rcu/tree.h
+++ b/kernel/rcu/tree.h
@@ -529,7 +529,7 @@ struct rcu_state {
 #define RCU_GP_FLAG_INIT 0x1	/* Need grace-period initialization. */
 #define RCU_GP_FLAG_FQS  0x2	/* Need grace-period quiescent-state forcing. */
 
-/* Values for rcu_state structure's gp_flags field. */
+/* Values for rcu_state structure's gp_state field. */
 #define RCU_GP_IDLE	 0	/* Initial state and no GP in progress. */
 #define RCU_GP_WAIT_GPS  1	/* Wait for grace-period start. */
 #define RCU_GP_DONE_GPS  2	/* Wait done for grace-period start. */