diff --git a/lib/compile/index.js b/lib/compile/index.js
index 570db36..610206a 100644
--- a/lib/compile/index.js
+++ b/lib/compile/index.js
@@ -7,20 +7,21 @@ var doT = require('dot')
     , resolve = require('./resolve');
 
 var RULES = require('./rules')
-    , validateTemplateStr = fs.readFileSync(__dirname + '/validate.dot.js')
-    , validateTemplate = doT.compile(validateTemplateStr);
+    , validateGenerator = require('./validate');
+    // , validateTemplateStr = fs.readFileSync(__dirname + '/validate.dot.js')
+    // , validateTemplate = doT.compile(validateTemplateStr);
 
 module.exports = compile;
 
 
 function compile(schema) {
     var self = this;
-    var validateCode = validateTemplate({
+    var validateCode = validateGenerator({
         isRoot: true,
         schema: schema,
         schemaPath: '',
         RULES: RULES,
-        validate: validateTemplate,
+        validate: validateGenerator,
         copy: copy,
         toHash: toHash,
         resolveRef: resolveRef,
@@ -63,19 +64,11 @@ function copy(o, to) {
 }
 
 
-function getDataType(data) {
-    if (data === null) return 'null';
-    if (Array.isArray(data)) return 'array';
-    return typeof data;
-}
-
-
 function checkDataType(dataType) {
     switch (dataType) {
         case 'null': return 'data === null';
         case 'array': return 'Array.isArray(data)';
         case 'object': return '(data && typeof data == "object" && !Array.isArray(data))';
-        // case 'object': return 'Object.prototype.toString.call(data).slice(8,-1) == "Object"';
         case 'integer': return '(typeof data == "number" && !(data % 1))'
         default: return 'typeof data == "' + dataType + '"';
     }
diff --git a/lib/compile/rules/properties.dot.js b/lib/compile/rules/properties.dot.js
index 15645e6..c0a6482 100644
--- a/lib/compile/rules/properties.dot.js
+++ b/lib/compile/rules/properties.dot.js
@@ -17,11 +17,8 @@ function (data, dataPath) {
     var $propertyKeys = Object.keys(it.schema || {})
       , $pProperties = it.parentSchema.patternProperties || {}
       , $pPropertyKeys = $pProperties && Object.keys($pProperties)
-      , $aProperties = it.parentSchema.additionalProperties;
-  }}
-
-  {{ 
-    var $noAdditional = $aProperties === false
+      , $aProperties = it.parentSchema.additionalProperties
+      , $noAdditional = $aProperties === false
       , $additionalIsSchema = typeof $aProperties == 'object'
                                 && Object.keys($aProperties).length
       , $checkAdditional = $noAdditional || $additionalIsSchema;
diff --git a/lib/compile/validate.dot.js b/lib/compile/validate.dot.js
index 600ca3d..f20eebe 100644
--- a/lib/compile/validate.dot.js
+++ b/lib/compile/validate.dot.js
@@ -6,7 +6,7 @@
     *
     * runtime:
     * "validate" is a variable name to which this function will be assigned
-    * copy, getDataType etc. are defined in the parent scope in index.js
+    * validateRef etc. are defined in the parent scope in index.js
     */ }}
 
 function (data{{? !it.isRoot }}, dataPath{{?}}) {
@@ -66,4 +66,4 @@ function (data{{? !it.isRoot }}, dataPath{{?}}) {
     }
     return $use;
   }
-}}
\ No newline at end of file
+}}
diff --git a/lib/compile/validate.js b/lib/compile/validate.js
new file mode 100644
index 0000000..d15a9ad
--- /dev/null
+++ b/lib/compile/validate.js
@@ -0,0 +1,72 @@
+/**
+ * schema compilation (render) time:
+ * it = { schema, RULES, _validate, opts }
+ * it.validate - this template function,
+ * it is used recursively to generate code for subschemas
+ * 
+ * runtime:
+ * "validate" is a variable name to which this function will be assigned
+ * validateRef etc. are defined in the parent scope in index.js
+ */
+
+module.exports = function (it) {
+  if (it.isRoot) {
+    it.isRoot = false;
+    var out = '\nfunction (data) { \n "use strict"; \n';
+    out += 'var dataPath = ""; \n';
+    out += 'var errs = validate.errors.length = 0; \n';
+  } else {
+    var out = '\nfunction (data, dataPath) { \n "use strict"; \n';
+    out += 'var errs = validate.errors.length; \n';
+  }
+
+
+  it.RULES.forEach(function (rulesGroup) {
+    if (shouldUseGroup(rulesGroup)) {
+      if (rulesGroup.type) out += 'if (' + (it.checkDataType(rulesGroup.type)) + ') { \n';
+
+      rulesGroup.rules.forEach(function (rule) {
+        if (shouldUseRule(rule)) {
+          if (rule.inline) out += rule.code(it) + ' \n';
+          else {
+            var $it = it.copy(it);
+            $it.schema = it.schema[rule.keyword];
+            $it.schemaPath = it.schemaPath + '.' + rule.keyword;
+            $it.parentSchema = it.schema;
+            $it.parentSchemaPath = it.schemaPath;
+
+            if (!it.opts.allErrors) out += 'var valid = ';
+            out += '(' + rule.code($it) + ')(data, dataPath); \n';
+          }
+          if (!it.opts.allErrors) out += ' if (!valid) return false; \n';
+        }
+      });
+
+      if (rulesGroup.type) out += ' } \n';
+    }
+  });
+
+  out += it.opts.allErrors
+          ? 'return errs == validate.errors.length; \n'
+          : 'return true; \n';
+
+  return out + '} \n';
+
+
+  function shouldUseGroup(rulesGroup) {
+    return rulesGroup.rules.some(function(rule) {
+      return shouldUseRule(rule);
+    });
+  }
+
+  function shouldUseRule(rule) {
+    var use = it.schema.hasOwnProperty(rule.keyword);
+    if (!use && rule.keyword == 'properties') {
+      var pProperties = it.schema.patternProperties
+        , aProperties = it.schema.additionalProperties;
+      use = (pProperties && Object.keys(pProperties).length) ||
+            (aProperties === false || typeof aProperties == 'object');
+    }
+    return use;
+  }
+}
diff --git a/package.json b/package.json
index ed3d89d..5f92c53 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "ajv",
-  "version": "0.1.4",
+  "version": "0.1.5",
   "description": "Another JSON schema Validator",
   "main": "lib/ajv.js",
   "scripts": {