diff --git a/src/core/sprites/Sprite.js b/src/core/sprites/Sprite.js
index 41d95f5..fbde4c9 100644
--- a/src/core/sprites/Sprite.js
+++ b/src/core/sprites/Sprite.js
@@ -108,11 +108,11 @@
     width: {
         get: function ()
         {
-            return this.scale.x * this.texture._frame.width;
+            return Math.abs(this.scale.x) * this.texture._frame.width;
         },
         set: function (value)
         {
-            this.scale.x = value / this.texture._frame.width;
+            this.scale.x = utils.sgn(this.scale.x) * value / this.texture._frame.width;
             this._width = value;
         }
     },
@@ -126,11 +126,11 @@
     height: {
         get: function ()
         {
-            return  this.scale.y * this.texture._frame.height;
+            return  Math.abs(this.scale.y) * this.texture._frame.height;
         },
         set: function (value)
         {
-            this.scale.y = value / this.texture._frame.height;
+            this.scale.y = utils.sgn(this.scale.y) * value / this.texture._frame.height;
             this._height = value;
         }
     },
@@ -182,12 +182,12 @@
     // so if _width is 0 then width was not set..
     if (this._width)
     {
-        this.scale.x = this._width / this.texture.frame.width;
+        this.scale.x = utils.sgn(this.scale.x) * this._width / this.texture.frame.width;
     }
 
     if (this._height)
     {
-        this.scale.y = this._height / this.texture.frame.height;
+        this.scale.y = utils.sgn(this.scale.y) * this._height / this.texture.frame.height;
     }
 };
 

diff --git a/src/core/sprites/Sprite.js b/src/core/sprites/Sprite.js
index 41d95f5..fbde4c9 100644
--- a/src/core/sprites/Sprite.js
+++ b/src/core/sprites/Sprite.js
@@ -108,11 +108,11 @@
     width: {
         get: function ()
         {
-            return this.scale.x * this.texture._frame.width;
+            return Math.abs(this.scale.x) * this.texture._frame.width;
         },
         set: function (value)
         {
-            this.scale.x = value / this.texture._frame.width;
+            this.scale.x = utils.sgn(this.scale.x) * value / this.texture._frame.width;
             this._width = value;
         }
     },
@@ -126,11 +126,11 @@
     height: {
         get: function ()
         {
-            return  this.scale.y * this.texture._frame.height;
+            return  Math.abs(this.scale.y) * this.texture._frame.height;
         },
         set: function (value)
         {
-            this.scale.y = value / this.texture._frame.height;
+            this.scale.y = utils.sgn(this.scale.y) * value / this.texture._frame.height;
             this._height = value;
         }
     },
@@ -182,12 +182,12 @@
     // so if _width is 0 then width was not set..
     if (this._width)
     {
-        this.scale.x = this._width / this.texture.frame.width;
+        this.scale.x = utils.sgn(this.scale.x) * this._width / this.texture.frame.width;
     }
 
     if (this._height)
     {
-        this.scale.y = this._height / this.texture.frame.height;
+        this.scale.y = utils.sgn(this.scale.y) * this._height / this.texture.frame.height;
     }
 };
 
diff --git a/src/core/utils/index.js b/src/core/utils/index.js
index 8c4ea72..420208f 100644
--- a/src/core/utils/index.js
+++ b/src/core/utils/index.js
@@ -224,6 +224,16 @@
     },
 
     /**
+     * Retunrs sign of number
+     *
+     * @param n {number}
+     * @returns {number} 0 if n is 0, -1 if n is negative, 1 if n i positive
+     */
+    sgn: function (n){
+        return n === 0 ? 0 : n < 0 ? -1 : 1;
+    },
+
+    /**
      * @todo Describe property usage
      * @private
      */

diff --git a/src/core/sprites/Sprite.js b/src/core/sprites/Sprite.js
index 41d95f5..fbde4c9 100644
--- a/src/core/sprites/Sprite.js
+++ b/src/core/sprites/Sprite.js
@@ -108,11 +108,11 @@
     width: {
         get: function ()
         {
-            return this.scale.x * this.texture._frame.width;
+            return Math.abs(this.scale.x) * this.texture._frame.width;
         },
         set: function (value)
         {
-            this.scale.x = value / this.texture._frame.width;
+            this.scale.x = utils.sgn(this.scale.x) * value / this.texture._frame.width;
             this._width = value;
         }
     },
@@ -126,11 +126,11 @@
     height: {
         get: function ()
         {
-            return  this.scale.y * this.texture._frame.height;
+            return  Math.abs(this.scale.y) * this.texture._frame.height;
         },
         set: function (value)
         {
-            this.scale.y = value / this.texture._frame.height;
+            this.scale.y = utils.sgn(this.scale.y) * value / this.texture._frame.height;
             this._height = value;
         }
     },
@@ -182,12 +182,12 @@
     // so if _width is 0 then width was not set..
     if (this._width)
     {
-        this.scale.x = this._width / this.texture.frame.width;
+        this.scale.x = utils.sgn(this.scale.x) * this._width / this.texture.frame.width;
     }
 
     if (this._height)
     {
-        this.scale.y = this._height / this.texture.frame.height;
+        this.scale.y = utils.sgn(this.scale.y) * this._height / this.texture.frame.height;
     }
 };
 
diff --git a/src/core/utils/index.js b/src/core/utils/index.js
index 8c4ea72..420208f 100644
--- a/src/core/utils/index.js
+++ b/src/core/utils/index.js
@@ -224,6 +224,16 @@
     },
 
     /**
+     * Retunrs sign of number
+     *
+     * @param n {number}
+     * @returns {number} 0 if n is 0, -1 if n is negative, 1 if n i positive
+     */
+    sgn: function (n){
+        return n === 0 ? 0 : n < 0 ? -1 : 1;
+    },
+
+    /**
      * @todo Describe property usage
      * @private
      */
diff --git a/test/unit/core/sprites/Sprite.test.js b/test/unit/core/sprites/Sprite.test.js
new file mode 100644
index 0000000..f94952a
--- /dev/null
+++ b/test/unit/core/sprites/Sprite.test.js
@@ -0,0 +1,55 @@
+describe('PIXI.Sprite', function () {
+    describe('width', function () {
+        it('should not be negative for nagative scale.x', function () {
+            var sprite = new PIXI.Sprite();
+
+            sprite.width = 100;
+            expect(sprite.width).to.be.at.least(0);
+            sprite.scale.x = -1;
+            expect(sprite.width).to.be.at.least(0);
+        });
+
+        it('should not change sign of scale.x', function () {
+            var texture = new PIXI.Texture(new PIXI.BaseTexture());
+            var sprite = new PIXI.Sprite();
+
+            texture.width = 100;
+            sprite.scale.x = 1;
+            sprite.width = 50;
+
+            expect(sprite.scale.x).to.be.above(0);
+
+            sprite.scale.x = -1;
+            sprite.width = 75;
+
+            expect(sprite.scale.x).to.be.below(0);
+        });
+    });
+
+    describe('height', function () {
+        it('should not be negative for nagative scale.y', function () {
+            var sprite = new PIXI.Sprite();
+
+            sprite.height = 100;
+            expect(sprite.height).to.be.at.least(0);
+            sprite.scale.y = -1;
+            expect(sprite.height).to.be.at.least(0);
+        });
+
+        it('should not change sign of scale.y', function () {
+            var texture = new PIXI.Texture(new PIXI.BaseTexture());
+            var sprite = new PIXI.Sprite();
+
+            texture.height = 100;
+            sprite.scale.y = 1;
+            sprite.height = 50;
+
+            expect(sprite.scale.y).to.be.above(0);
+
+            sprite.scale.y = -1;
+            sprite.height = 75;
+
+            expect(sprite.scale.y).to.be.below(0);
+        });
+    });
+});

diff --git a/src/core/sprites/Sprite.js b/src/core/sprites/Sprite.js
index 41d95f5..fbde4c9 100644
--- a/src/core/sprites/Sprite.js
+++ b/src/core/sprites/Sprite.js
@@ -108,11 +108,11 @@
     width: {
         get: function ()
         {
-            return this.scale.x * this.texture._frame.width;
+            return Math.abs(this.scale.x) * this.texture._frame.width;
         },
         set: function (value)
         {
-            this.scale.x = value / this.texture._frame.width;
+            this.scale.x = utils.sgn(this.scale.x) * value / this.texture._frame.width;
             this._width = value;
         }
     },
@@ -126,11 +126,11 @@
     height: {
         get: function ()
         {
-            return  this.scale.y * this.texture._frame.height;
+            return  Math.abs(this.scale.y) * this.texture._frame.height;
         },
         set: function (value)
         {
-            this.scale.y = value / this.texture._frame.height;
+            this.scale.y = utils.sgn(this.scale.y) * value / this.texture._frame.height;
             this._height = value;
         }
     },
@@ -182,12 +182,12 @@
     // so if _width is 0 then width was not set..
     if (this._width)
     {
-        this.scale.x = this._width / this.texture.frame.width;
+        this.scale.x = utils.sgn(this.scale.x) * this._width / this.texture.frame.width;
     }
 
     if (this._height)
     {
-        this.scale.y = this._height / this.texture.frame.height;
+        this.scale.y = utils.sgn(this.scale.y) * this._height / this.texture.frame.height;
     }
 };
 
diff --git a/src/core/utils/index.js b/src/core/utils/index.js
index 8c4ea72..420208f 100644
--- a/src/core/utils/index.js
+++ b/src/core/utils/index.js
@@ -224,6 +224,16 @@
     },
 
     /**
+     * Retunrs sign of number
+     *
+     * @param n {number}
+     * @returns {number} 0 if n is 0, -1 if n is negative, 1 if n i positive
+     */
+    sgn: function (n){
+        return n === 0 ? 0 : n < 0 ? -1 : 1;
+    },
+
+    /**
      * @todo Describe property usage
      * @private
      */
diff --git a/test/unit/core/sprites/Sprite.test.js b/test/unit/core/sprites/Sprite.test.js
new file mode 100644
index 0000000..f94952a
--- /dev/null
+++ b/test/unit/core/sprites/Sprite.test.js
@@ -0,0 +1,55 @@
+describe('PIXI.Sprite', function () {
+    describe('width', function () {
+        it('should not be negative for nagative scale.x', function () {
+            var sprite = new PIXI.Sprite();
+
+            sprite.width = 100;
+            expect(sprite.width).to.be.at.least(0);
+            sprite.scale.x = -1;
+            expect(sprite.width).to.be.at.least(0);
+        });
+
+        it('should not change sign of scale.x', function () {
+            var texture = new PIXI.Texture(new PIXI.BaseTexture());
+            var sprite = new PIXI.Sprite();
+
+            texture.width = 100;
+            sprite.scale.x = 1;
+            sprite.width = 50;
+
+            expect(sprite.scale.x).to.be.above(0);
+
+            sprite.scale.x = -1;
+            sprite.width = 75;
+
+            expect(sprite.scale.x).to.be.below(0);
+        });
+    });
+
+    describe('height', function () {
+        it('should not be negative for nagative scale.y', function () {
+            var sprite = new PIXI.Sprite();
+
+            sprite.height = 100;
+            expect(sprite.height).to.be.at.least(0);
+            sprite.scale.y = -1;
+            expect(sprite.height).to.be.at.least(0);
+        });
+
+        it('should not change sign of scale.y', function () {
+            var texture = new PIXI.Texture(new PIXI.BaseTexture());
+            var sprite = new PIXI.Sprite();
+
+            texture.height = 100;
+            sprite.scale.y = 1;
+            sprite.height = 50;
+
+            expect(sprite.scale.y).to.be.above(0);
+
+            sprite.scale.y = -1;
+            sprite.height = 75;
+
+            expect(sprite.scale.y).to.be.below(0);
+        });
+    });
+});
diff --git a/test/unit/core/utils/util.test.js b/test/unit/core/utils/util.test.js
index 3ea1155..7f5ee91 100644
--- a/test/unit/core/utils/util.test.js
+++ b/test/unit/core/utils/util.test.js
@@ -86,4 +86,25 @@
                 .to.be.a('function');
         });
     });
+
+    describe('.sgn', function () {
+        it('should return 0 for 0', function () {
+            expect(PIXI.utils.sgn(0))
+                .to.be.equal(0);
+        });
+
+        it('should return -1 for negative numbers', function () {
+            for (var i = 0;i<10;i+=1){
+                expect(PIXI.utils.sgn(-Math.random()))
+                    .to.be.equal(-1);
+            }
+        });
+
+        it('should return 1 for positive numbers', function () {
+            for (var i = 0;i<10;i+=1){
+                expect(PIXI.utils.sgn(Math.random() + 0.000001))
+                    .to.be.equal(1);
+            }
+        });
+    });
 });