diff --git a/init/Kconfig b/init/Kconfig
index d0590c7..34050fe 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -603,7 +603,7 @@
 config RCU_BOOST
 	bool "Enable RCU priority boosting"
 	depends on RT_MUTEXES && PREEMPT_RCU
-	default n
+	default y if PREEMPT_RT_FULL
 	help
 	  This option boosts the priority of preempted RCU readers that
 	  block the current preemptible RCU grace period for too long.