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-rw-r--r--contracts/chequebook/contract/chequebook.sol5
1 files changed, 3 insertions, 2 deletions
diff --git a/contracts/chequebook/contract/chequebook.sol b/contracts/chequebook/contract/chequebook.sol
index eefe6c063..845ba464b 100644
--- a/contracts/chequebook/contract/chequebook.sol
+++ b/contracts/chequebook/contract/chequebook.sol
@@ -27,10 +27,11 @@ contract chequebook is mortal {
if(owner != ecrecover(hash, sig_v, sig_r, sig_s)) return;
// Attempt sending the difference between the cumulative amount on the cheque
// and the cumulative amount on the last cashed cheque to beneficiary.
- if (amount - sent[beneficiary] >= this.balance) {
+ uint256 diff = amount - sent[beneficiary];
+ if (diff <= this.balance) {
// update the cumulative amount before sending
sent[beneficiary] = amount;
- if (!beneficiary.send(amount - sent[beneficiary])) {
+ if (!beneficiary.send(diff)) {
// Upon failure to execute send, revert everything
throw;
}