diff --git a/src/order-builder/helpers.ts b/src/order-builder/helpers.ts
index a823852a..150b3e88 100644
--- a/src/order-builder/helpers.ts
+++ b/src/order-builder/helpers.ts
@@ -203,10 +203,10 @@ export const getMarketOrderRawAmounts = (
     if (side === Side.BUY) {
         const rawMakerAmt = roundDown(amount, roundConfig.size);
         let rawTakerAmt = rawMakerAmt / rawPrice;
-        if (decimalPlaces(rawTakerAmt) > roundConfig.amount) {
-            rawTakerAmt = roundUp(rawTakerAmt, roundConfig.amount + 4);
-            if (decimalPlaces(rawTakerAmt) > roundConfig.amount) {
-                rawTakerAmt = roundDown(rawTakerAmt, roundConfig.amount);
+        if (decimalPlaces(rawTakerAmt) > roundConfig.size) {
+            rawTakerAmt = roundUp(rawTakerAmt, roundConfig.size + 4);
+            if (decimalPlaces(rawTakerAmt) > roundConfig.size) {
+                rawTakerAmt = roundDown(rawTakerAmt, roundConfig.size);
             }
         }
         return {
@@ -217,10 +217,10 @@ export const getMarketOrderRawAmounts = (
     } else {
         const rawMakerAmt = roundDown(amount, roundConfig.size);
         let rawTakerAmt = rawMakerAmt * rawPrice;
-        if (decimalPlaces(rawTakerAmt) > roundConfig.amount) {
-            rawTakerAmt = roundUp(rawTakerAmt, roundConfig.amount + 4);
-            if (decimalPlaces(rawTakerAmt) > roundConfig.amount) {
-                rawTakerAmt = roundDown(rawTakerAmt, roundConfig.amount);
+        if (decimalPlaces(rawTakerAmt) > roundConfig.size) {
+            rawTakerAmt = roundUp(rawTakerAmt, roundConfig.size + 4);
+            if (decimalPlaces(rawTakerAmt) > roundConfig.size) {
+                rawTakerAmt = roundDown(rawTakerAmt, roundConfig.size);
             }
         }