diff --git a/src/bank.cpp b/src/bank.cpp
index dbd7602..df7312e 100644
--- a/src/bank.cpp
+++ b/src/bank.cpp
@@ -213,10 +213,10 @@ BankResponse Bank::PruneUsers(uint32_t threshold_bal) noexcept
     for (const auto &u : users)
     {
 #if RETURN_ON_DEL
-        if (Bank::users.erase_if(u.first, [threshold_time, threshold_bal, &bal, &deleted_count](User &u) -> bool {
+        if (Bank::users.erase_if(u.first, [threshold_time, threshold_bal, &bal, &deleted_count](User &u) {
                 bal += u.balance;
 #else
-        if (Bank::users.erase_if(u.first, [threshold_time, threshold_bal, &deleted_count](User &u) -> bool {
+        if (Bank::users.erase_if(u.first, [threshold_time, threshold_bal, &deleted_count](User &u) {
 #endif
 #if MAX_LOG_SIZE > 0
                 return ((!u.log.data.size() || u.log.data.back().time < threshold_time) && u.balance < threshold_bal);