diff --git a/src/utils/validation/stringIsFloat.ts b/src/utils/validation/stringIsFloat.ts
index bc575c800..173f62669 100755
--- a/src/utils/validation/stringIsFloat.ts
+++ b/src/utils/validation/stringIsFloat.ts
@@ -14,12 +14,14 @@ export const stringIsFloat = (amount: string) => {
 
   // eslint-disable-next-line
   let [wholes, decimals] = amount.split('.');
+  const LocalBigNumber = BigNumber.clone();
+
   if (decimals) {
     const areAllNumbers = decimals
       .split('')
       .every((digit) => !isNaN(parseInt(digit)));
 
-    BigNumber.set({
+    LocalBigNumber.set({
       DECIMAL_PLACES: areAllNumbers
         ? decimals.length
         : BigNumber.config().DECIMAL_PLACES
@@ -30,6 +32,10 @@ export const stringIsFloat = (amount: string) => {
     }
   }
   const number = decimals ? [wholes, decimals].join('.') : wholes;
-  const bNparsed = new BigNumber(number);
-  return bNparsed.toString(10) === number && bNparsed.comparedTo(0) >= 0;
+  const bNparsed = LocalBigNumber(number);
+
+  const output =
+    bNparsed.toString(10) === number && bNparsed.comparedTo(0) >= 0;
+
+  return output;
 };