diff --git a/lime/graphics/Image.hx b/lime/graphics/Image.hx
index 2440ecc2b..06d80c307 100644
--- a/lime/graphics/Image.hx
+++ b/lime/graphics/Image.hx
@@ -252,6 +252,7 @@ class Image {
 			
 			case CANVAS:
 				
+				ImageCanvasUtil.convertToCanvas (this);
 				ImageCanvasUtil.copyPixels (this, sourceImage, sourceRect, destPoint, alphaImage, alphaPoint, mergeAlpha);
 			
 			case DATA:
@@ -1196,4 +1197,4 @@ enum ImageChannel {
 	BLUE;
 	ALPHA;
 	
-}
\ No newline at end of file
+}