diff --git a/src/alternativa/engine3d/resources/ATFTextureResource.as b/src/alternativa/engine3d/resources/ATFTextureResource.as
index 0bdafa4..7be8286 100644
--- a/src/alternativa/engine3d/resources/ATFTextureResource.as
+++ b/src/alternativa/engine3d/resources/ATFTextureResource.as
@@ -62,8 +62,6 @@ package alternativa.engine3d.resources {
 				var format:String;
 				switch (type & 0x7F) {
 					case 0:
-						format = Context3DTextureFormat.BGRA;
-						break;
 					case 1:
 						format = Context3DTextureFormat.BGRA;
 						break;
@@ -71,6 +69,10 @@ package alternativa.engine3d.resources {
 					case 3:
 						format = Context3DTextureFormat.COMPRESSED;
 						break;
+					case 4:
+					case 5:
+						format = "compressedAlpha"; // Context3DTextureFormat.COMPRESSED_ALPHA
+						break;
 				}
 
 				if ((type & ~0x7F) == 0) {