diff --git a/lib/class.js b/lib/class.js
index dccdd84..c49c000 100644
--- a/lib/class.js
+++ b/lib/class.js
@@ -22,7 +22,7 @@
  * @package core
  */
 
-var propCopy   = require( './util' ).propCopy,
+var util       = require( './util' ),
     can_freeze = require( './util' ).canFreeze();
 
 
@@ -60,8 +60,8 @@ exports.abstractMethod = function( definition )
         throw new Error( "Cannot call abstract method" );
     };
 
-    define_secure_prop( method, 'abstractFlag', true );
-    define_secure_prop( method, 'definition', definition );
+    util.defineSecureProp( method, 'abstractFlag', true );
+    util.defineSecureProp( method, 'definition', definition );
 
     return method;
 }
@@ -118,7 +118,7 @@ var extend = ( function( extending )
         var result_data = {
             abstractMethods: ( base.abstractMethods || [] ).slice()
         };
-        propCopy( props, prototype, result_data );
+        util.propCopy( props, prototype, result_data );
 
         // reference to the parent prototype (for more experienced users)
         prototype.parent = base.prototype;
@@ -198,38 +198,6 @@ function setup_props( func, class_data )
 }
 
 
-/**
- * Attempts to define a non-enumerable, non-writable and non-configurable
- * property on the given object
- *
- * If the operation is unsupported, a normal property will be set.
- *
- * @param  {Object}  obj    object to set property on
- * @param  {string}  prop   name of property to set
- * @param  {mixed}   value  value to set
- *
- * @return  {undefined}
- */
-function define_secure_prop( obj, prop, value )
-{
-    if ( Object.defineProperty === undefined )
-    {
-        func[ prop ] = value;
-    }
-    else
-    {
-        Object.defineProperty( obj, prop,
-        {
-            value: value,
-
-            enumerable:   false,
-            writable:     false,
-            configurable: false,
-        });
-    }
-}
-
-
 /**
  * Attaches isAbstract() method to the class
  *
@@ -248,7 +216,7 @@ function attach_abstract( func, methods )
      *
      * @return  {Boolean}  true if class is abstract, otherwise false
      */
-    define_secure_prop( func, 'isAbstract', function()
+    util.defineSecureProp( func, 'isAbstract', function()
     {
         return is_abstract;
     });
@@ -256,7 +224,7 @@ function attach_abstract( func, methods )
     // attach the list of abstract methods to the class (make the copy of the
     // methods to ensure that they won't be gc'd or later modified and screw up
     // the value)
-    define_secure_prop( func, 'abstractMethods', methods );
+    util.defineSecureProp( func, 'abstractMethods', methods );
 }
 
 
@@ -279,7 +247,7 @@ function attach_extend( func )
      *
      * @return  {Object}  extended class
      */
-    define_secure_prop( func, 'extend', function( props )
+    util.defineSecureProp( func, 'extend', function( props )
     {
         return extend( this, props );
     });
diff --git a/lib/util.js b/lib/util.js
index fac7496..18eefd1 100644
--- a/lib/util.js
+++ b/lib/util.js
@@ -47,6 +47,38 @@ exports.canFreeze = function()
 }
 
 
+/**
+ * Attempts to define a non-enumerable, non-writable and non-configurable
+ * property on the given object
+ *
+ * If the operation is unsupported, a normal property will be set.
+ *
+ * @param  {Object}  obj    object to set property on
+ * @param  {string}  prop   name of property to set
+ * @param  {mixed}   value  value to set
+ *
+ * @return  {undefined}
+ */
+exports.defineSecureProp = function( obj, prop, value )
+{
+    if ( Object.defineProperty === undefined )
+    {
+        func[ prop ] = value;
+    }
+    else
+    {
+        Object.defineProperty( obj, prop,
+        {
+            value: value,
+
+            enumerable:   false,
+            writable:     false,
+            configurable: false,
+        });
+    }
+}
+
+
 /**
  * Copies properties to the destination object
  *