diff --git a/lib/bill-math.js b/lib/bill-math.js
index fbb3ee99..0b7c5a1a 100644
--- a/lib/bill-math.js
+++ b/lib/bill-math.js
@@ -109,7 +109,7 @@ function makeChange(outCassettes, amount) {
   )
 
   if (available < amount) {
-    console.log(`Tried to dispense more than was available for amount ${amount.toNumber()} with cassettes ${JSON.stringify(cassettes)}`)
+    console.log(`Tried to dispense more than was available for amount ${amount.toNumber()} with cassettes ${JSON.stringify(outCassettes)}`)
     return null
   }