diff --git a/src/views/Wallet/views/Account/Send/ethereum/components/AdvancedForm/index.js b/src/views/Wallet/views/Account/Send/ethereum/components/AdvancedForm/index.js
index 0a4c5662..8f44bd49 100644
--- a/src/views/Wallet/views/Account/Send/ethereum/components/AdvancedForm/index.js
+++ b/src/views/Wallet/views/Account/Send/ethereum/components/AdvancedForm/index.js
@@ -81,8 +81,8 @@ const AdvancedSettingsSendButtonWrapper = styled.div`
     justify-content: flex-end;
 `;
 
-const getGasLimitInputState = (gasLimitErrors: string, gasLimitWarnings: string): string => {
-    let state = '';
+const getGasLimitInputState = (gasLimitErrors: string, gasLimitWarnings: string): ?string => {
+    let state = null;
     if (gasLimitWarnings && !gasLimitErrors) {
         state = 'warning';
     }
@@ -92,8 +92,8 @@ const getGasLimitInputState = (gasLimitErrors: string, gasLimitWarnings: string)
     return state;
 };
 
-const getGasPriceInputState = (gasPriceErrors: string, gasPriceWarnings: string): string => {
-    let state = '';
+const getGasPriceInputState = (gasPriceErrors: string, gasPriceWarnings: string): ?string => {
+    let state = null;
     if (gasPriceWarnings && !gasPriceErrors) {
         state = 'warning';
     }
@@ -103,8 +103,8 @@ const getGasPriceInputState = (gasPriceErrors: string, gasPriceWarnings: string)
     return state;
 };
 
-const getDataTextareaState = (dataError: string, dataWarning: string): string => {
-    let state = '';
+const getDataTextareaState = (dataError: string, dataWarning: string): ?string => {
+    let state = null;
     if (dataWarning) {
         state = 'warning';
     }
diff --git a/src/views/Wallet/views/Account/Send/ethereum/index.js b/src/views/Wallet/views/Account/Send/ethereum/index.js
index 3e4867ac..ebe761c3 100644
--- a/src/views/Wallet/views/Account/Send/ethereum/index.js
+++ b/src/views/Wallet/views/Account/Send/ethereum/index.js
@@ -236,8 +236,8 @@ const getAddressInputState = (
     address: string,
     addressErrors: string,
     addressWarnings: string
-): string => {
-    let state = '';
+): ?string => {
+    let state = null;
     if (address && !addressErrors) {
         state = 'success';
     }
@@ -250,8 +250,8 @@ const getAddressInputState = (
     return state;
 };
 
-const getAmountInputState = (amountErrors: string, amountWarnings: string): string => {
-    let state = '';
+const getAmountInputState = (amountErrors: string, amountWarnings: string): ?string => {
+    let state = null;
     if (amountWarnings && !amountErrors) {
         state = 'warning';
     }
diff --git a/src/views/Wallet/views/Account/Send/ripple/components/AdvancedForm/index.js b/src/views/Wallet/views/Account/Send/ripple/components/AdvancedForm/index.js
index dd4498aa..24848c01 100644
--- a/src/views/Wallet/views/Account/Send/ripple/components/AdvancedForm/index.js
+++ b/src/views/Wallet/views/Account/Send/ripple/components/AdvancedForm/index.js
@@ -68,8 +68,8 @@ const StyledIcon = styled(Icon)`
     margin-left: 6px;
 `;
 
-const getFeeInputState = (feeErrors: string, feeWarnings: string): string => {
-    let state = '';
+const getFeeInputState = (feeErrors: string, feeWarnings: string): ?string => {
+    let state = null;
     if (feeWarnings && !feeErrors) {
         state = 'warning';
     }
@@ -79,8 +79,8 @@ const getFeeInputState = (feeErrors: string, feeWarnings: string): string => {
     return state;
 };
 
-const getDestinationTagInputState = (errors: string, warnings: string): string => {
-    let state = '';
+const getDestinationTagInputState = (errors: string, warnings: string): ?string => {
+    let state = null;
     if (warnings && !errors) {
         state = 'warning';
     }
diff --git a/src/views/Wallet/views/Account/Send/ripple/index.js b/src/views/Wallet/views/Account/Send/ripple/index.js
index c39c0e48..bc7c28a0 100644
--- a/src/views/Wallet/views/Account/Send/ripple/index.js
+++ b/src/views/Wallet/views/Account/Send/ripple/index.js
@@ -234,8 +234,8 @@ const getAddressInputState = (
     address: string,
     addressErrors: string,
     addressWarnings: string
-): string => {
-    let state = '';
+): ?string => {
+    let state = null;
     if (address && !addressErrors) {
         state = 'success';
     }
@@ -248,8 +248,8 @@ const getAddressInputState = (
     return state;
 };
 
-const getAmountInputState = (amountErrors: string, amountWarnings: string): string => {
-    let state = '';
+const getAmountInputState = (amountErrors: string, amountWarnings: string): ?string => {
+    let state = null;
     if (amountWarnings && !amountErrors) {
         state = 'warning';
     }