diff --git a/README.md b/README.md
index b4967fd..2ef6533 100644
--- a/README.md
+++ b/README.md
@@ -319,10 +319,10 @@ The value of this keyword must be boolean.
 
 If the value of the keyword is `false`, the validation succeeds.
 
-If the properties keyword is not used in the same schema object, the validation succeeds.
-
 If the value of the keyword is `true`, the validation succeeds if the data contains all properties defined in `properties` keyword (in the same schema object).
 
+If the `properties` keyword is not present in the same schema object, schema compilation will throw exception.
+
 ```javascript
 var schema = {
   properties: {
diff --git a/keywords/allRequired.js b/keywords/allRequired.js
index 9d694cb..afc73eb 100644
--- a/keywords/allRequired.js
+++ b/keywords/allRequired.js
@@ -4,14 +4,13 @@ module.exports = function defFunc(ajv) {
   defFunc.definition = {
     type: 'object',
     macro: function (schema, parentSchema) {
-      if (!schema) return {};
-      var properties = Object.keys(parentSchema.properties || {});
-      if (properties.length == 0) return {};
-      return { required: properties };
+      if (!schema) return true;
+      var properties = Object.keys(parentSchema.properties);
+      if (properties.length == 0) return true;
+      return {required: properties};
     },
-    metaSchema: {
-      type: 'boolean'
-    }
+    metaSchema: {type: 'boolean'},
+    dependencies: ['properties']
   };
 
   ajv.addKeyword('allRequired', defFunc.definition);
diff --git a/spec/allRequired.spec.js b/spec/allRequired.spec.js
new file mode 100644
index 0000000..c979a98
--- /dev/null
+++ b/spec/allRequired.spec.js
@@ -0,0 +1,47 @@
+'use strict';
+
+var Ajv = require('ajv');
+var ajvPack = require('ajv-pack');
+var defFunc = require('../keywords/allRequired');
+var defineKeywords = require('..');
+var should = require('chai').should();
+
+
+describe('keyword "allRequired"', function() {
+  var ajvs = [
+    defFunc(new Ajv),
+    defineKeywords(new Ajv, 'allRequired'),
+    defineKeywords(new Ajv),
+    defFunc(ajvPack.instance(new Ajv({sourceCode: true})))
+  ];
+
+  ajvs.forEach(function (ajv, i) {
+    it('should validate that all defined properties are present #' + i, function() {
+      var schema = {
+        properties: {
+          foo: true,
+          bar: true
+        },
+        allRequired: true
+      };
+      ajv.validate(schema, {foo: 1, bar: 2}) .should.equal(true);
+      ajv.validate(schema, {foo: 1}) .should.equal(false);
+    });
+  });
+
+  ajvs.forEach(function (ajv, i) {
+    it('should throw when properties is absent #' + i, function() {
+      should.throw(function() {
+        ajv.compile({ allRequired: true });
+      });
+    });
+  });
+
+  ajvs.forEach(function (ajv, i) {
+    it('should throw when allRequired schema is invalid #' + i, function() {
+      should.throw(function() {
+        ajv.compile({ properties: {foo: true}, allRequired: 1 });
+      });
+    });
+  });
+});
diff --git a/spec/tests/allRequired.json b/spec/tests/allRequired.json
index d81dbac..125bff3 100644
--- a/spec/tests/allRequired.json
+++ b/spec/tests/allRequired.json
@@ -82,23 +82,5 @@
         "valid": true
       }
     ]
-  },
-  {
-    "description": "allRequired passed validation if properties keyword is absent",
-    "schema": {
-      "allRequired": true
-    },
-    "tests": [
-      {
-        "description": "any object is valid",
-        "data": {"foo": 1, "bar": 2},
-        "valid": true
-      },
-      {
-        "description": "empty object is valid",
-        "data": {},
-        "valid": true
-      }
-    ]
   }
 ]