diff --git a/hxd/res/Image.hx b/hxd/res/Image.hx
index e09037f39..f1137a53b 100644
--- a/hxd/res/Image.hx
+++ b/hxd/res/Image.hx
@@ -127,6 +127,9 @@ class Image extends Resource {
 						var colbits = f.readByte();
 						var colType = f.readByte();
 						inf.pixelFormat = switch ([colbits, colType]) {
+							case [1, _]: BGRA;
+							case [2, _]: BGRA;
+							case [4, _]: BGRA;
 							case [8, _]: BGRA; // TODO : grayscale png image
 							case [16, 0]: R16U;
 							case [16, 2]: RGBA16U; // RGB16U is not supported on DirectX !