diff --git a/lib/extensions/Number.js b/lib/extensions/Number.js
index 6646c78..fb3f81f 100644
--- a/lib/extensions/Number.js
+++ b/lib/extensions/Number.js
@@ -1,118 +1,118 @@
 var Schema = require('../BaseSchema')
 
 var NumberSchema = module.exports = Schema.extensions.NumberSchema = Schema.extend({
-  initialize: function(minimum, exclusiveMinimum, maximum, exclusiveMaximum, divisibleBy) {
-    this.minimum = minimum != null ? minimum : -Infinity
-    this.exclusiveMinimum = exclusiveMinimum
-    this.maximum = minimum != null ? maximum : Infinity
-    this.exclusiveMaximum = exclusiveMaximum
-    this.divisibleBy = divisibleBy || 0
-  },
-
-  min: function(minimum) {
-    return new NumberSchema( minimum, false
-                           , this.maximum
-                           , this.exclusiveMaximum
-                           , this.divisibleBy
-                           ).wrap()
-  },
-
-  above: function(minimum) {
-    return new NumberSchema( minimum, true
-                           , this.maximum
-                           , this.exclusiveMaximum
-                           , this.divisibleBy
-                           ).wrap()
-  },
-
-  max: function(maximum) {
-    return new NumberSchema( this.minimum
-                           , this.exclusiveMinimum
-                           , maximum
-                           , false
-                           , this.divisibleBy
-                           ).wrap()
-  },
-
-  below: function(maximum) {
-    return new NumberSchema( this.minimum
-                           , this.exclusiveMinimum
-                           , maximum
-                           , true
-                           , this.divisibleBy
-                           ).wrap()
-  },
-
-  step: function(divisibleBy) {
-    return new NumberSchema( this.minimum
-                           , this.exclusiveMinimum
-                           , this.maximum
-                           , this.exclusiveMaximum
-                           , divisibleBy
-                           ).wrap()
-  },
-
-  publicFunctions: ['min', 'above', 'max', 'below', 'step'],
-
-  errors: function(instance) {
-    var message
-    if (!(Object(instance) instanceof Number)) {
-      message = instance + ' is not Number'
-    } else if (instance < this.minimum) {
-      message = 'number = ' + instance + ' is smaller than required minimum = ' + this.minimum
-    } else if (instance > this.maximum) {
-      message = 'number = ' + instance + ' is bigger than required maximum = ' + this.maximum
-    } else if (this.divisibleBy !== 0 && instance % this.divisibleBy !== 0) {
-      message = 'number = ' + instance + ' is not divisibleBy ' + this.divisibleBy
+    initialize: function (minimum, exclusiveMinimum, maximum, exclusiveMaximum, divisibleBy) {
+        this.minimum = minimum != null ? minimum : -Infinity
+        this.exclusiveMinimum = exclusiveMinimum
+        this.maximum = minimum != null ? maximum : Infinity
+        this.exclusiveMaximum = exclusiveMaximum
+        this.divisibleBy = divisibleBy || 0
+    },
+
+    min: function (minimum) {
+        return new NumberSchema(minimum, false
+            , this.maximum
+            , this.exclusiveMaximum
+            , this.divisibleBy
+        ).wrap()
+    },
+
+    above: function (minimum) {
+        return new NumberSchema(minimum, true
+            , this.maximum
+            , this.exclusiveMaximum
+            , this.divisibleBy
+        ).wrap()
+    },
+
+    max: function (maximum) {
+        return new NumberSchema(this.minimum
+            , this.exclusiveMinimum
+            , maximum
+            , false
+            , this.divisibleBy
+        ).wrap()
+    },
+
+    below: function (maximum) {
+        return new NumberSchema(this.minimum
+            , this.exclusiveMinimum
+            , maximum
+            , true
+            , this.divisibleBy
+        ).wrap()
+    },
+
+    step: function (divisibleBy) {
+        return new NumberSchema(this.minimum
+            , this.exclusiveMinimum
+            , this.maximum
+            , this.exclusiveMaximum
+            , divisibleBy
+        ).wrap()
+    },
+
+    publicFunctions: ['min', 'above', 'max', 'below', 'step'],
+
+    errors: function (instance) {
+        var message
+        if (!(Object(instance) instanceof Number)) {
+            message = instance + ' is not Number'
+        } else if (instance < this.minimum || (this.exclusiveMinimum && instance <= this.minimum)) {
+            message = 'number = ' + instance + ' does not fit with ' + (this.exclusiveMinimum ? 'strict' : '') + ' required minimum = ' + this.minimum
+        } else if (instance > this.maximum || (this.exclusiveMaximum && instance >= this.maximum)) {
+            message = 'number = ' + instance + ' does not fit with ' + (this.exclusiveMaximum ? 'strict' : '') + ' required maximum = ' + this.maximum
+        } else if (this.divisibleBy !== 0 && instance % this.divisibleBy !== 0) {
+            message = 'number = ' + instance + ' is not divisibleBy ' + this.divisibleBy
+        }
+
+        if (message != null) {
+            return message
+        }
+        return false
+    },
+
+    validate: function (instance) {
+        return (Object(instance) instanceof Number) &&
+            (this.exclusiveMinimum ? instance > this.minimum
+                : instance >= this.minimum) &&
+            (this.exclusiveMaximum ? instance < this.maximum
+                : instance <= this.maximum) &&
+            (this.divisibleBy === 0 || instance % this.divisibleBy === 0)
+    },
+
+    toJSON: function () {
+        var json = Schema.prototype.toJSON.call(this)
+
+        json.type = ( this.divisibleBy !== 0 && this.divisibleBy % 1 === 0) ? 'integer' : 'number'
+
+        if (this.divisibleBy !== 0 && this.divisibleBy !== 1) json.divisibleBy = this.divisibleBy
+
+        if (this.minimum !== -Infinity) {
+            json.minimum = this.minimum
+            if (this.exclusiveMinimum === true) json.exclusiveMinimum = true
+        }
+
+        if (this.maximum !== Infinity) {
+            json.maximum = this.maximum
+            if (this.exclusiveMaximum === true) json.exclusiveMaximum = true
+        }
+
+        return json
     }
-
-    if (message != null) {
-      return message
-    }
-    return false
-  },
-
-  validate: function(instance) {
-    return (Object(instance) instanceof Number) &&
-      (this.exclusiveMinimum ? instance >  this.minimum
-                             : instance >= this.minimum) &&
-      (this.exclusiveMaximum ? instance <  this.maximum
-                             : instance <= this.maximum) &&
-      (this.divisibleBy === 0 || instance % this.divisibleBy === 0)
-  },
-
-  toJSON: function() {
-    var json = Schema.prototype.toJSON.call(this)
-
-    json.type = ( this.divisibleBy !== 0 && this.divisibleBy % 1 === 0) ? 'integer' : 'number'
-
-    if (this.divisibleBy !== 0 && this.divisibleBy !== 1) json.divisibleBy = this.divisibleBy
-
-    if (this.minimum !== -Infinity) {
-      json.minimum = this.minimum
-      if (this.exclusiveMinimum === true) json.exclusiveMinimum = true
-    }
-
-    if (this.maximum !== Infinity) {
-      json.maximum = this.maximum
-      if (this.exclusiveMaximum === true) json.exclusiveMaximum = true
-    }
-
-    return json
-  }
 })
 
-Schema.fromJSON.def(function(sch) {
-  if (!sch || (sch.type !== 'number' && sch.type !== 'integer')) return
+Schema.fromJSON.def(function (sch) {
+    if (!sch || (sch.type !== 'number' && sch.type !== 'integer')) return
 
-  return new NumberSchema(sch.minimum, sch.exclusiveMinimum, sch.maximum, sch.exclusiveMaximum, sch.divisibleBy || (sch.type === 'integer' ? 1 : 0))
+    return new NumberSchema(sch.minimum, sch.exclusiveMinimum, sch.maximum, sch.exclusiveMaximum, sch.divisibleBy || (sch.type === 'integer' ? 1 : 0))
 })
 
-Number.schema     = new NumberSchema().wrap()
-Number.min        = Number.schema.min
-Number.above      = Number.schema.above
-Number.max        = Number.schema.max
-Number.below      = Number.schema.below
-Number.step       = Number.schema.step
+Number.schema = new NumberSchema().wrap()
+Number.min = Number.schema.min
+Number.above = Number.schema.above
+Number.max = Number.schema.max
+Number.below = Number.schema.below
+Number.step = Number.schema.step
 
-Number.Integer    = Number.step(1)
+Number.Integer = Number.step(1)
diff --git a/lib/patterns/nothing.js b/lib/patterns/nothing.js
index 31a6982..d8a1629 100644
--- a/lib/patterns/nothing.js
+++ b/lib/patterns/nothing.js
@@ -2,6 +2,8 @@ var Schema = require('../BaseSchema')
 
 var NothingSchema = module.exports = Schema.patterns.NothingSchema = Schema.extend({
   errors: function(instance) {
+    if (instance != null)
+      return "this key is not allowed in strict mode";
     return false
   },
   validate: function(instance) {