diff --git a/js/layout-modes/fit-rows.js b/js/layout-modes/fit-rows.js
index d90f068..8711e3f 100644
--- a/js/layout-modes/fit-rows.js
+++ b/js/layout-modes/fit-rows.js
@@ -7,7 +7,7 @@
   /* jshint strict: false */ /*globals define, module, require */
   if ( typeof define == 'function' && define.amd ) {
     // AMD
-    define( [
+    define( 'isotope/layout-modes/fit-rows',[
         '../layout-mode'
       ],
       factory );
@@ -35,18 +35,40 @@ proto._resetLayout = function() {
   this.y = 0;
   this.maxY = 0;
   this._getMeasurement( 'gutter', 'outerWidth' );
+
+  if(this.options.centered) {
+	  this.rowCount = 0;
+	  this.positioned = 0;
+	  this.numItems = this.isotope.filteredItems.length;
+  }
 };
 
 proto._getItemLayoutPosition = function( item ) {
   item.getSize();
-
+  
   var itemWidth = item.size.outerWidth + this.gutter;
   // if this element cannot fit in the current row
   var containerWidth = this.isotope.size.innerWidth + this.gutter;
-  if ( this.x !== 0 && itemWidth + this.x > containerWidth ) {
+   // items per row
+
+ if ( this.x !== 0 && itemWidth + this.x > containerWidth ) {
     this.x = 0;
     this.y = this.maxY;
-  }
+  } 
+
+  if(this.options.centered) {
+	  var itemsPerRow = Math.round(containerWidth / itemWidth);
+	  var remainder = this.numItems % itemsPerRow;
+	  var rows = Math.ceil(this.numItems / itemsPerRow);
+	  var itemsLeftToPosition = this.numItems - this.positioned - 1;
+	  if(this.x === 0) {
+		  this.rowCount++;
+		  if(remainder > 0 && rows === this.rowCount) {
+			var takenSpace = itemWidth * itemsLeftToPosition;
+			this.x = Math.round(( containerWidth / 2) - ( takenSpace / 2) - (itemWidth / 2));
+		  }
+	  }
+  } 
 
   var position = {
     x: this.x,
@@ -55,7 +77,11 @@ proto._getItemLayoutPosition = function( item ) {
 
   this.maxY = Math.max( this.maxY, this.y + item.size.outerHeight );
   this.x += itemWidth;
-
+  
+  if(this.options.centered) {
+	  this.positioned++;
+  }
+  
   return position;
 };