1 files changed, 1 insertions, 1 deletions
diff --git a/packages/website/ts/components/inputs/balance_bounded_input.tsx b/packages/website/ts/components/inputs/balance_bounded_input.tsx
index 67d5b781e..3bbc7a5f6 100644
--- a/packages/website/ts/components/inputs/balance_bounded_input.tsx
+++ b/packages/website/ts/components/inputs/balance_bounded_input.tsx
@@ -103,7 +103,7 @@ export class BalanceBoundedInput extends React.Component<BalanceBoundedInputProp
             },
             () => {
                 const isValid = _.isUndefined(errMsg);
-                if (utils.isNumeric(amountString)) {
+                if (utils.isNumeric(amountString) && !_.includes(amountString, '-')) {
                     this.props.onChange(isValid, new BigNumber(amountString));
                 } else {
                     this.props.onChange(isValid);