diff --git a/src/utils/order.ts b/src/utils/order.ts
index 7b8d2ea8..d200d98b 100644
--- a/src/utils/order.ts
+++ b/src/utils/order.ts
@@ -230,7 +230,7 @@ export const mapOrderAmountsFromUnitsToFill = (
   const unitsToFillBn = BigInt(unitsToFill);
 
   if (unitsToFillBn <= 0n) {
-    throw new Error("Units to fill must be greater than 1");
+    throw new Error("Units to fill must be greater than 0");
   }
 
   const maxUnits = getMaximumSizeForOrder(order);