diff --git a/OpenRA.Game/Graphics/Sheet.cs b/OpenRA.Game/Graphics/Sheet.cs
index b6e3b07fcf3b..bb9bae1b359b 100644
--- a/OpenRA.Game/Graphics/Sheet.cs
+++ b/OpenRA.Game/Graphics/Sheet.cs
@@ -103,7 +103,7 @@ public Png AsPng(TextureChannel channel, IPalette pal)
 			for (var i = 0; i < Palette.Size; i++)
 				palColors[i] = pal.GetColor(i);
 
-			return new Png(plane, SpriteFrameType.Bgra32, Size.Width, Size.Height, palColors);
+			return new Png(plane, SpriteFrameType.Indexed8, Size.Width, Size.Height, palColors);
 		}
 
 		public void CreateBuffer()
diff --git a/OpenRA.Game/Map/Map.cs b/OpenRA.Game/Map/Map.cs
index e77f5456d4fa..e960177a4b42 100644
--- a/OpenRA.Game/Map/Map.cs
+++ b/OpenRA.Game/Map/Map.cs
@@ -779,7 +779,7 @@ public byte[] SavePreview()
 				}
 			}
 
-			var png = new Png(minimapData, SpriteFrameType.Bgra32, bitmapWidth, height);
+			var png = new Png(minimapData, SpriteFrameType.Rgba32, bitmapWidth, height);
 			return png.Save();
 		}