2 files changed, 20 insertions, 10 deletions
diff --git a/packages/instant/src/components/erc20_asset_amount_input.tsx b/packages/instant/src/components/erc20_asset_amount_input.tsx
index 520ac33d5..b825255c4 100644
--- a/packages/instant/src/components/erc20_asset_amount_input.tsx
+++ b/packages/instant/src/components/erc20_asset_amount_input.tsx
@@ -22,7 +22,8 @@ export interface ERC20AssetAmountInputProps {
     onSelectAssetClick?: (asset?: ERC20Asset) => void;
     startingFontSizePx: number;
     fontColor?: ColorOption;
-    isDisabled: boolean;
+    isInputDisabled: boolean;
+    canSelectOtherAsset: boolean;
     numberOfAssetsAvailable?: number;
 }
 
@@ -50,14 +51,15 @@ export class ERC20AssetAmountInput extends React.Component<ERC20AssetAmountInput
         );
     }
     private readonly _renderContentForAsset = (asset: ERC20Asset): React.ReactNode => {
-        const { onChange, ...rest } = this.props;
-        const amountBorderBottom = this.props.isDisabled ? '' : `1px solid ${transparentWhite}`;
+        const { onChange, isInputDisabled, ...rest } = this.props;
+        const amountBorderBottom = isInputDisabled ? '' : `1px solid ${transparentWhite}`;
         const onSymbolClick = this._generateSelectAssetClickHandler();
         return (
             <React.Fragment>
                 <Container borderBottom={amountBorderBottom} display="inline-block">
                     <ScalingAmountInput
                         {...rest}
+                        isDisabled={isInputDisabled}
                         textLengthThreshold={this._textLengthThresholdForAsset(asset)}
                         maxFontSizePx={this.props.startingFontSizePx}
                         onAmountChange={this._handleChange}
@@ -74,11 +76,11 @@ export class ERC20AssetAmountInput extends React.Component<ERC20AssetAmountInput
                             fontSize={`${this.state.currentFontSizePx}px`}
                             fontColor={ColorOption.white}
                             textTransform="uppercase"
-                            onClick={onSymbolClick}
+                            onClick={this.props.canSelectOtherAsset ? onSymbolClick : undefined}
                         >
                             {assetUtils.formattedSymbolForAsset(asset)}
                         </Text>
-                        {this._renderChevronIcon()}
+                        {this.props.canSelectOtherAsset && this._renderChevronIcon()}
                     </Flex>
                 </Container>
             </React.Fragment>
diff --git a/packages/instant/src/containers/selected_erc20_asset_amount_input.ts b/packages/instant/src/containers/selected_erc20_asset_amount_input.ts
index 2c2661e1a..a39bc46a2 100644
--- a/packages/instant/src/containers/selected_erc20_asset_amount_input.ts
+++ b/packages/instant/src/containers/selected_erc20_asset_amount_input.ts
@@ -23,9 +23,10 @@ interface ConnectedState {
     assetBuyer: AssetBuyer;
     value?: BigNumber;
     asset?: ERC20Asset;
-    isDisabled: boolean;
+    isInputDisabled: boolean;
     numberOfAssetsAvailable?: number;
     affiliateInfo?: AffiliateInfo;
+    canSelectOtherAsset: boolean;
 }
 
 interface ConnectedDispatch {
@@ -43,21 +44,27 @@ type FinalProps = ConnectedProps & SelectedERC20AssetAmountInputProps;
 
 const mapStateToProps = (state: State, _ownProps: SelectedERC20AssetAmountInputProps): ConnectedState => {
     const processState = state.buyOrderState.processState;
-    const isEnabled = processState === OrderProcessState.None || processState === OrderProcessState.Failure;
-    const isDisabled = !isEnabled;
+    const isInputEnabled = processState === OrderProcessState.None || processState === OrderProcessState.Failure;
+    const isInputDisabled = !isInputEnabled;
     const selectedAsset =
         !_.isUndefined(state.selectedAsset) && state.selectedAsset.metaData.assetProxyId === AssetProxyId.ERC20
             ? (state.selectedAsset as ERC20Asset)
             : undefined;
     const numberOfAssetsAvailable = _.isUndefined(state.availableAssets) ? undefined : state.availableAssets.length;
+    const canSelectOtherAsset =
+        numberOfAssetsAvailable && numberOfAssetsAvailable > 1
+            ? isInputEnabled || processState === OrderProcessState.Success
+            : false;
+
     const assetBuyer = state.providerState.assetBuyer;
     return {
         assetBuyer,
         value: state.selectedAssetUnitAmount,
         asset: selectedAsset,
-        isDisabled,
+        isInputDisabled,
         numberOfAssetsAvailable,
         affiliateInfo: state.affiliateInfo,
+        canSelectOtherAsset,
     };
 };
 
@@ -102,8 +109,9 @@ const mergeProps = (
         onChange: (value, asset) => {
             connectedDispatch.updateBuyQuote(connectedState.assetBuyer, value, asset, connectedState.affiliateInfo);
         },
-        isDisabled: connectedState.isDisabled,
+        isInputDisabled: connectedState.isInputDisabled,
         numberOfAssetsAvailable: connectedState.numberOfAssetsAvailable,
+        canSelectOtherAsset: connectedState.canSelectOtherAsset,
     };
 };