diff --git a/lime/graphics/utils/ImageDataUtil.hx b/lime/graphics/utils/ImageDataUtil.hx
index bfb3494da..d80d646ee 100644
--- a/lime/graphics/utils/ImageDataUtil.hx
+++ b/lime/graphics/utils/ImageDataUtil.hx
@@ -287,7 +287,6 @@ class ImageDataUtil {
 					
 					var alphaView = new ImageDataView (alphaImage, new Rectangle (alphaPoint.x, alphaPoint.y, destView.width, destView.height));
 					var alphaPosition, alphaPixel:RGBA;
-					var alphaOffsetY = alphaView.y - destView.y;
 					
 					if (blend) {
 						
@@ -295,7 +294,7 @@ class ImageDataUtil {
 							
 							sourcePosition = sourceView.row (y);
 							destPosition = destView.row (y);
-							alphaPosition = alphaView.row (y + alphaOffsetY);
+							alphaPosition = alphaView.row (y);
 							
 							for (x in 0...destView.width) {
 								
@@ -334,7 +333,7 @@ class ImageDataUtil {
 							
 							sourcePosition = sourceView.row (y);
 							destPosition = destView.row (y);
-							alphaPosition = alphaView.row (y + alphaOffsetY);
+							alphaPosition = alphaView.row (y);
 							
 							for (x in 0...destView.width) {
 								
diff --git a/project/src/graphics/utils/ImageDataUtil.cpp b/project/src/graphics/utils/ImageDataUtil.cpp
index fe3aad6f3..3bd348247 100644
--- a/project/src/graphics/utils/ImageDataUtil.cpp
+++ b/project/src/graphics/utils/ImageDataUtil.cpp
@@ -215,7 +215,6 @@ namespace lime {
 			ImageDataView alphaView = ImageDataView (alphaImage, &alphaRect);
 			int alphaPosition;
 			RGBA alphaPixel;
-			int alphaOffsetY = alphaView.y - destView.y;
 			
 			if (blend) {
 				
@@ -223,7 +222,7 @@ namespace lime {
 					
 					sourcePosition = sourceView.Row (y);
 					destPosition = destView.Row (y);
-					alphaPosition = alphaView.Row (y + alphaOffsetY);
+					alphaPosition = alphaView.Row (y);
 					
 					for (int x = 0; x < destView.width; x++) {
 						
@@ -262,7 +261,7 @@ namespace lime {
 					
 					sourcePosition = sourceView.Row (y);
 					destPosition = destView.Row (y);
-					alphaPosition = alphaView.Row (y + alphaOffsetY);
+					alphaPosition = alphaView.Row (y);
 					
 					for (int x = 0; x < destView.width; x++) {