diff --git a/src/components/forms/validator.js b/src/components/forms/validator.js
index e5a54d22..ba609f24 100644
--- a/src/components/forms/validator.js
+++ b/src/components/forms/validator.js
@@ -5,7 +5,10 @@ type Field = boolean | string
 
 export const required = (value: Field) => (value ? undefined : 'Required')
 
-export const mustBeNumber = (value: number) =>
+export const mustBeInteger = (value: string) =>
+  (!Number.isInteger(Number(value)) || value.includes('.') ? 'Must be an integer' : undefined)
+
+export const mustBeFloat = (value: number) =>
   (Number.isNaN(Number(value)) ? 'Must be a number' : undefined)
 
 export const greaterThan = (min: number) => (value: string) => {
diff --git a/src/routes/open/components/SafeForm/Confirmations/index.jsx b/src/routes/open/components/SafeForm/Confirmations/index.jsx
index 68f59761..b757faa6 100644
--- a/src/routes/open/components/SafeForm/Confirmations/index.jsx
+++ b/src/routes/open/components/SafeForm/Confirmations/index.jsx
@@ -2,7 +2,7 @@
 import * as React from 'react'
 import { Field } from 'react-final-form'
 import TextField from '~/components/forms/TextField'
-import { composeValidators, minValue, mustBeNumber, required } from '~/components/forms/validator'
+import { composeValidators, minValue, mustBeInteger, required } from '~/components/forms/validator'
 import Block from '~/components/layout/Block'
 import { FIELD_CONFIRMATIONS } from '~/routes/open/components/fields'
 
@@ -14,7 +14,7 @@ const Confirmations = () => (
       type="text"
       validate={composeValidators(
         required,
-        mustBeNumber,
+        mustBeInteger,
         minValue(1),
       )}
       placeholder="Required confirmations*"
diff --git a/src/routes/open/components/SafeForm/DailyLimit/index.jsx b/src/routes/open/components/SafeForm/DailyLimit/index.jsx
index 34dbd153..6c26b035 100644
--- a/src/routes/open/components/SafeForm/DailyLimit/index.jsx
+++ b/src/routes/open/components/SafeForm/DailyLimit/index.jsx
@@ -2,7 +2,7 @@
 import * as React from 'react'
 import Field from '~/components/forms/Field'
 import TextField from '~/components/forms/TextField'
-import { composeValidators, mustBeNumber, required, minValue } from '~/components/forms/validator'
+import { composeValidators, mustBeFloat, required, minValue } from '~/components/forms/validator'
 import Block from '~/components/layout/Block'
 import { FIELD_DAILY_LIMIT } from '~/routes/open/components/fields'
 
@@ -12,7 +12,7 @@ const DailyLimit = () => (
       name={FIELD_DAILY_LIMIT}
       component={TextField}
       type="text"
-      validate={composeValidators(required, mustBeNumber, minValue(0))}
+      validate={composeValidators(required, mustBeFloat, minValue(0))}
       placeholder="Daily Limit*"
       text="Daily Limit"
     />
diff --git a/src/routes/open/components/SafeForm/Owners/index.jsx b/src/routes/open/components/SafeForm/Owners/index.jsx
index 71928dcf..fa51f1b3 100644
--- a/src/routes/open/components/SafeForm/Owners/index.jsx
+++ b/src/routes/open/components/SafeForm/Owners/index.jsx
@@ -6,7 +6,7 @@ import {
   composeValidators,
   minValue,
   maxValue,
-  mustBeNumber,
+  mustBeInteger,
   mustBeEthereumAddress,
   required,
   uniqueAddress,
@@ -45,7 +45,7 @@ const Owners = (props: Props) => {
           name={FIELD_OWNERS}
           component={TextField}
           type="text"
-          validate={composeValidators(required, mustBeNumber, maxValue(MAX_NUMBER_OWNERS), minValue(1))}
+          validate={composeValidators(required, mustBeInteger, maxValue(MAX_NUMBER_OWNERS), minValue(1))}
           placeholder="Number of owners*"
           text="Number of owners"
         />
diff --git a/src/routes/safe/component/AddTransaction/MultisigForm/index.jsx b/src/routes/safe/component/AddTransaction/MultisigForm/index.jsx
index f0393c33..20dcd466 100644
--- a/src/routes/safe/component/AddTransaction/MultisigForm/index.jsx
+++ b/src/routes/safe/component/AddTransaction/MultisigForm/index.jsx
@@ -2,7 +2,7 @@
 import * as React from 'react'
 import Field from '~/components/forms/Field'
 import TextField from '~/components/forms/TextField'
-import { composeValidators, inLimit, mustBeNumber, required, greaterThan, mustBeEthereumAddress } from '~/components/forms/validator'
+import { composeValidators, inLimit, mustBeFloat, required, greaterThan, mustBeEthereumAddress } from '~/components/forms/validator'
 import Block from '~/components/layout/Block'
 import Heading from '~/components/layout/Heading'
 import { TX_NAME_PARAM, TX_DESTINATION_PARAM, TX_VALUE_PARAM } from '~/routes/safe/component/AddTransaction/createTransactions'
@@ -56,7 +56,7 @@ const WithdrawnForm = ({ balance }: Props) => () => (
         name={TX_VALUE_PARAM}
         component={TextField}
         type="text"
-        validate={composeValidators(required, mustBeNumber, greaterThan(0), inLimit(balance, 0, 'available balance'))}
+        validate={composeValidators(required, mustBeFloat, greaterThan(0), inLimit(balance, 0, 'available balance'))}
         placeholder="Amount in ETH*"
         text="Amount in ETH"
       />
diff --git a/src/routes/safe/component/Withdrawn/WithdrawnForm/index.jsx b/src/routes/safe/component/Withdrawn/WithdrawnForm/index.jsx
index df5dbf39..12f0ae26 100644
--- a/src/routes/safe/component/Withdrawn/WithdrawnForm/index.jsx
+++ b/src/routes/safe/component/Withdrawn/WithdrawnForm/index.jsx
@@ -2,7 +2,7 @@
 import * as React from 'react'
 import Field from '~/components/forms/Field'
 import TextField from '~/components/forms/TextField'
-import { composeValidators, inLimit, mustBeNumber, required, greaterThan, mustBeEthereumAddress } from '~/components/forms/validator'
+import { composeValidators, inLimit, mustBeFloat, required, greaterThan, mustBeEthereumAddress } from '~/components/forms/validator'
 import Block from '~/components/layout/Block'
 import Heading from '~/components/layout/Heading'
 import { DESTINATION_PARAM, VALUE_PARAM } from '~/routes/safe/component/Withdrawn/withdrawn'
@@ -37,7 +37,7 @@ const WithdrawnForm = ({ limit, spentToday }: Props) => () => (
         name={VALUE_PARAM}
         component={TextField}
         type="text"
-        validate={composeValidators(required, mustBeNumber, greaterThan(0), inLimit(limit, spentToday, 'daily limit'))}
+        validate={composeValidators(required, mustBeFloat, greaterThan(0), inLimit(limit, spentToday, 'daily limit'))}
         placeholder="Amount in ETH*"
         text="Amount in ETH"
       />