@ -65,7 +65,7 @@ namespace tools
rpc_payment_state.credits = post_call_credits;
rpc_payment_state.expected_spent += expected_credits;
if (pre_call_credits < post_call_credits)
if (pre_call_credits <= post_call_credits)
return;
uint64_t cost = pre_call_credits - post_call_credits;