diff --git a/src/lib/isFloat.js b/src/lib/isFloat.js
index 643f9729f..84bdc782c 100644
--- a/src/lib/isFloat.js
+++ b/src/lib/isFloat.js
@@ -1,4 +1,5 @@
 import assertString from './util/assertString';
+import isNullOrUndefined from './util/nullUndefinedCheck';
 import { decimal } from './alpha';
 
 export default function isFloat(str, options) {
@@ -10,10 +11,10 @@ export default function isFloat(str, options) {
   }
   const value = parseFloat(str.replace(',', '.'));
   return float.test(str) &&
-    (!options.hasOwnProperty('min') || value >= options.min) &&
-    (!options.hasOwnProperty('max') || value <= options.max) &&
-    (!options.hasOwnProperty('lt') || value < options.lt) &&
-    (!options.hasOwnProperty('gt') || value > options.gt);
+    (!options.hasOwnProperty('min') || isNullOrUndefined(options.min) || value >= options.min) &&
+    (!options.hasOwnProperty('max') || isNullOrUndefined(options.max) || value <= options.max) &&
+    (!options.hasOwnProperty('lt') || isNullOrUndefined(options.lt) || value < options.lt) &&
+    (!options.hasOwnProperty('gt') || isNullOrUndefined(options.gt) || value > options.gt);
 }
 
 export const locales = Object.keys(decimal);
diff --git a/src/lib/isInt.js b/src/lib/isInt.js
index 8047a6969..3b9f39c85 100644
--- a/src/lib/isInt.js
+++ b/src/lib/isInt.js
@@ -1,4 +1,5 @@
 import assertString from './util/assertString';
+import isNullOrUndefined from './util/nullUndefinedCheck';
 
 const int = /^(?:[-+]?(?:0|[1-9][0-9]*))$/;
 const intLeadingZeroes = /^[-+]?[0-9]+$/;
@@ -15,10 +16,10 @@ export default function isInt(str, options) {
   );
 
   // Check min/max/lt/gt
-  let minCheckPassed = (!options.hasOwnProperty('min') || str >= options.min);
-  let maxCheckPassed = (!options.hasOwnProperty('max') || str <= options.max);
-  let ltCheckPassed = (!options.hasOwnProperty('lt') || str < options.lt);
-  let gtCheckPassed = (!options.hasOwnProperty('gt') || str > options.gt);
+  let minCheckPassed = (!options.hasOwnProperty('min') || isNullOrUndefined(options.min) || str >= options.min);
+  let maxCheckPassed = (!options.hasOwnProperty('max') || isNullOrUndefined(options.max) || str <= options.max);
+  let ltCheckPassed = (!options.hasOwnProperty('lt') || isNullOrUndefined(options.lt) || str < options.lt);
+  let gtCheckPassed = (!options.hasOwnProperty('gt') || isNullOrUndefined(options.gt) || str > options.gt);
 
   return regex.test(str) && minCheckPassed && maxCheckPassed && ltCheckPassed && gtCheckPassed;
 }
diff --git a/src/lib/util/nullUndefinedCheck.js b/src/lib/util/nullUndefinedCheck.js
new file mode 100644
index 000000000..c45bfbe82
--- /dev/null
+++ b/src/lib/util/nullUndefinedCheck.js
@@ -0,0 +1,3 @@
+export default function isNullOrUndefined(value) {
+  return value === null || value === undefined;
+}
diff --git a/test/validators.test.js b/test/validators.test.js
index 6c68cd71a..4ec5e93f4 100644
--- a/test/validators.test.js
+++ b/test/validators.test.js
@@ -4155,6 +4155,78 @@ describe('Validators', () => {
         'a',
       ],
     });
+    test({
+      validator: 'isInt',
+      args: [{
+        min: undefined,
+        max: undefined,
+      }],
+      valid: [
+        '143',
+        '15',
+        '767777575',
+      ],
+      invalid: [
+        '10.4',
+        'bar',
+        '10a',
+        'c44',
+      ],
+    });
+    test({
+      validator: 'isInt',
+      args: [{
+        gt: undefined,
+        lt: undefined,
+      }],
+      valid: [
+        '289373466',
+        '55',
+        '989',
+      ],
+      invalid: [
+        '10.4',
+        'baz',
+        '66a',
+        'c21',
+      ],
+    });
+    test({
+      validator: 'isInt',
+      args: [{
+        gt: null,
+        max: null,
+      }],
+      valid: [
+        '1',
+        '886',
+        '84512345',
+      ],
+      invalid: [
+        '10.4',
+        'h',
+        '1.2',
+        '+',
+      ],
+    });
+    test({
+      validator: 'isInt',
+      args: [{
+        lt: null,
+        min: null,
+      }],
+      valid: [
+        '289373466',
+        '55',
+        '989',
+      ],
+      invalid: [
+        ',',
+        '+11212+',
+        'fail',
+        '111987234i',
+      ],
+    });
   });
 
   it('should validate floats', () => {
@@ -4384,6 +4456,87 @@ describe('Validators', () => {
         'foo',
       ],
     });
+    test({
+      validator: 'isFloat',
+      args: [{
+        min: undefined,
+        max: undefined,
+      }],
+      valid: [
+        '123',
+        '123.',
+        '123.123',
+        '-767.767',
+        '+111.111',
+      ],
+      invalid: [
+        'ab565',
+        '-,123',
+        '+,123',
+        '7866.t',
+        '123,123',
+        '123,',
+      ],
+    });
+    test({
+      validator: 'isFloat',
+      args: [{
+        gt: undefined,
+        lt: undefined,
+      }],
+      valid: [
+        '14.34343',
+        '11.1',
+        '456',
+      ],
+      invalid: [
+        'ab565',
+        '-,123',
+        '+,123',
+        '7866.t',
+      ],
+    });
+    test({
+      validator: 'isFloat',
+      args: [{
+        locale: 'ar',
+        gt: null,
+        max: null,
+      }],
+      valid: [
+        '13324٫',
+        '12321',
+        '444٫83874',
+      ],
+      invalid: [
+        '55.55.55',
+        '1;23',
+        '+-123',
+        '1111111l1',
+        '3.3',
+      ],
+    });
+    test({
+      validator: 'isFloat',
+      args: [{
+        locale: 'ru-RU',
+        lt: null,
+        min: null,
+      }],
+      valid: [
+        '11231554,34343',
+        '11,1',
+        '456',
+        ',311',
+      ],
+      invalid: [
+        'ab565',
+        '-.123',
+        '+.123',
+        '7866.t',
+        '22.3',
+      ],
+    });
   });
 
   it('should validate hexadecimal strings', () => {