diff --git a/src/wallet/wallet2.cpp b/src/wallet/wallet2.cpp
index dc4129203..9b568eb2a 100644
--- a/src/wallet/wallet2.cpp
+++ b/src/wallet/wallet2.cpp
@@ -8478,7 +8478,7 @@ uint64_t wallet2::get_fee_multiplier(fee_priority priority, fee_algorithm fee_al
   }
 
   const auto fee_algorithm_index = fee_algorithm_utilities::as_integral(fee_algorithm);
-  THROW_WALLET_EXCEPTION_IF(fee_algorithm_index < 0 || fee_algorithm_index > static_cast<int>(std::size(fee_steps)), error::invalid_priority);
+  THROW_WALLET_EXCEPTION_IF(fee_algorithm_index < 0 || fee_algorithm_index >= static_cast<int>(std::size(fee_steps)), error::invalid_priority);
 
   // 1 to 3/4 are allowed as priorities
   const fee_priority max_priority = fee_steps[fee_algorithm_index].maximum_priority;