diff --git a/core/tracing/hooks.go b/core/tracing/hooks.go
index d0b1d36deb..987dfa7a1e 100644
--- a/core/tracing/hooks.go
+++ b/core/tracing/hooks.go
@@ -300,7 +300,7 @@ const (
 	GasChangeCallStorageColdAccess GasChangeReason = 13
 	// GasChangeCallFailedExecution is the burning of the remaining gas when the execution failed without a revert.
 	GasChangeCallFailedExecution GasChangeReason = 14
-	// GasChangeWitnessContractInit flags the event of of adding to the witness during the contract creation initialization step.
+	// GasChangeWitnessContractInit flags the event of adding to the witness during the contract creation initialization step.
 	GasChangeWitnessContractInit GasChangeReason = 15
 	// GasChangeWitnessContractCreation flags the event of adding to the witness during the contract creation finalization step.
 	GasChangeWitnessContractCreation GasChangeReason = 16