diff --git a/src/Corporation/Actions.ts b/src/Corporation/Actions.ts
index b1f7eff11..26e4ee99e 100644
--- a/src/Corporation/Actions.ts
+++ b/src/Corporation/Actions.ts
@@ -105,6 +105,7 @@ export function SellMaterial(mat: Material, amt: string, price: string): void {
   }
 
   //Parse quantity
+  amt = amt.toUpperCase();
   if (amt.includes("MAX") || amt.includes("PROD")) {
     let q = amt.replace(/\s+/g, "");
     q = q.replace(/[^-()\d/*+.MAXPROD]/g, "");
@@ -168,6 +169,7 @@ export function SellProduct(product: Product, city: string, amt: string, price:
   const cities = Object.keys(Cities);
 
   // Parse quantity
+  amt = amt.toUpperCase();
   if (amt.includes("MAX") || amt.includes("PROD")) {
     //Dynamically evaluated quantity. First test to make sure its valid
     let qty = amt.replace(/\s+/g, "");
@@ -372,7 +374,7 @@ export function Research(division: IIndustry, researchName: string): void {
 
 export function ExportMaterial(divisionName: string, cityName: string, material: Material, amt: string): void {
   // Sanitize amt
-  let sanitizedAmt = amt.replace(/\s+/g, "");
+  let sanitizedAmt = amt.replace(/\s+/g, "").toUpperCase();
   sanitizedAmt = sanitizedAmt.replace(/[^-()\d/*+.MAX]/g, "");
   let temp = sanitizedAmt.replace(/MAX/g, "1");
   try {
diff --git a/src/Corporation/Industry.ts b/src/Corporation/Industry.ts
index 6be0d0da6..d10e8b448 100644
--- a/src/Corporation/Industry.ts
+++ b/src/Corporation/Industry.ts
@@ -840,7 +840,7 @@ export class Industry implements IIndustry {
                 let sellAmt;
                 if (isString(mat.sllman[1])) {
                   //Dynamically evaluated
-                  let tmp = (mat.sllman[1] as string).replace(/MAX/g, maxSell + "");
+                  let tmp = (mat.sllman[1] as string).replace(/MAX/g, (maxSell + "").toUpperCase());
                   tmp = tmp.replace(/PROD/g, mat.prd + "");
                   try {
                     sellAmt = eval(tmp);
@@ -893,7 +893,7 @@ export class Industry implements IIndustry {
                   const exp = mat.exp[expI];
                   const amtStr = exp.amt.replace(
                     /MAX/g,
-                    mat.qty / (CorporationConstants.SecsPerMarketCycle * marketCycles) + "",
+                    (mat.qty / (CorporationConstants.SecsPerMarketCycle * marketCycles) + "").toUpperCase(),
                   );
                   let amt = 0;
                   try {
@@ -1201,7 +1201,7 @@ export class Industry implements IIndustry {
             let sellAmt;
             if (product.sllman[city][0] && isString(product.sllman[city][1])) {
               //Sell amount is dynamically evaluated
-              let tmp = product.sllman[city][1].replace(/MAX/g, maxSell);
+              let tmp = product.sllman[city][1].replace(/MAX/g, (maxSell + "").toUpperCase());
               tmp = tmp.replace(/PROD/g, product.data[city][1]);
               try {
                 tmp = eval(tmp);