diff --git a/src/silentpayments.rs b/src/silentpayments.rs
index ed921f5..c338bf6 100644
--- a/src/silentpayments.rs
+++ b/src/silentpayments.rs
@@ -57,15 +57,17 @@ pub fn create_transaction(
         inputs.insert(must_outpoint, must_output);
     }
 
+    let fee_provision = sum_outputs.checked_div(10).unwrap();
+
     for (outpoint, output) in available_outpoints {
-        if total_available > sum_outputs.checked_add(sum_outputs.checked_div(10).unwrap()).unwrap() {
+        if total_available > sum_outputs.checked_add(fee_provision).unwrap() {
             break;
         }
         total_available += output.amount;
         inputs.insert(outpoint, output);
     }
 
-    if total_available < sum_outputs {
+    if total_available <= sum_outputs.checked_add(fee_provision).unwrap() {
         return Err(Error::msg("Not enough available funds"));
     }