diff --git a/kernel/configs/debug.config b/kernel/configs/debug.config
index 509ee703de15..20552f163930 100644
--- a/kernel/configs/debug.config
+++ b/kernel/configs/debug.config
@@ -103,6 +103,7 @@ CONFIG_BUG_ON_DATA_CORRUPTION=y
 #
 # RCU Debugging
 #
+CONFIG_RCU_EXPERT=y
 CONFIG_PROVE_RCU=y
 CONFIG_PROVE_RCU_LIST=y
 #