diff --git a/src/components/Wizard/CreateVmWizard/tests/__snapshots__/CreateVmWizard.test.js.snap b/src/components/Wizard/CreateVmWizard/tests/__snapshots__/CreateVmWizard.test.js.snap
index 6f3f01c9a..7bfb881aa 100644
--- a/src/components/Wizard/CreateVmWizard/tests/__snapshots__/CreateVmWizard.test.js.snap
+++ b/src/components/Wizard/CreateVmWizard/tests/__snapshots__/CreateVmWizard.test.js.snap
@@ -95,6 +95,7 @@ Object {
     "isRequired": Object {
       "flavor": false,
     },
+    "validation": null,
     "value": undefined,
   },
   "name": Object {
diff --git a/src/components/Wizard/CreateVmWizard/validations/vmSettingsTabValidation.js b/src/components/Wizard/CreateVmWizard/validations/vmSettingsTabValidation.js
index c5c51e184..f799b8e09 100644
--- a/src/components/Wizard/CreateVmWizard/validations/vmSettingsTabValidation.js
+++ b/src/components/Wizard/CreateVmWizard/validations/vmSettingsTabValidation.js
@@ -1,7 +1,13 @@
 import { get } from 'lodash';
 
 import { isFieldRequired } from '../utils/vmSettingsTabUtils';
-import { getValidationObject, validateContainer, validateVmName, validateURL } from '../../../../utils/validations';
+import {
+  getValidationObject,
+  validateContainer,
+  validateVmName,
+  validateURL,
+  validateMemory,
+} from '../../../../utils/validations';
 import { objectMerge } from '../../../../utils/utils';
 import { settingsValue } from '../../../../k8s/selectors';
 import { PROVISION_SOURCE_IMPORT, VALIDATION_ERROR_TYPE } from '../../../../constants';
@@ -13,6 +19,7 @@ import {
   PROVIDER_KEY,
   PROVIDERS_DATA_KEY,
   PROVISION_SOURCE_TYPE_KEY,
+  MEMORY_KEY,
 } from '../constants';
 import { NAMESPACE_MUST_BE_SELECTED } from '../../../../utils/strings';
 import { isProviderValid, validateProvider } from '../providers';
@@ -40,6 +47,7 @@ const validateResolver = {
   [CONTAINER_IMAGE_KEY]: asVmSettingsValidator(validateContainer),
   [IMAGE_URL_KEY]: asVmSettingsValidator(validateURL),
   [PROVIDER_KEY]: validateProviderDropdown,
+  [MEMORY_KEY]: asVmSettingsValidator(validateMemory),
 };
 
 export const validateVmSettings = (vmSettings, additionalResources) => {
diff --git a/src/utils/validations.js b/src/utils/validations.js
index db08a08e7..a9ddc44d0 100644
--- a/src/utils/validations.js
+++ b/src/utils/validations.js
@@ -20,7 +20,7 @@ import { VALIDATION_ERROR_TYPE } from '../constants';
 import { getName, getNamespace } from '../selectors';
 import { NAMESPACE_KEY, VIRTUAL_MACHINES_KEY } from '../components/Wizard/CreateVmWizard/constants';
 
-export const isPositiveNumber = value => value && value.match(/^[1-9]\d*$/);
+export const isPositiveNumber = value => value && value.toString().match(/^[1-9]\d*$/);
 
 const alphanumberincRegex = '[a-zA-Z0-9]';
 
@@ -69,6 +69,13 @@ export const validateVmName = (value, vmSettings, props) => {
     : vmAlreadyExists(value, get(vmSettings, `${NAMESPACE_KEY}.value`), props[VIRTUAL_MACHINES_KEY]);
 };
 
+export const validateMemory = value => {
+  if (!value) {
+    return getValidationObject(EMPTY_ERROR);
+  }
+  return isPositiveNumber(value) ? null : getValidationObject('must be positive integer');
+};
+
 export const validateURL = value => {
   if (!value) {
     return getValidationObject(EMPTY_ERROR);