diff --git a/QuickLook.Plugin/QuickLook.Plugin.ImageViewer/Plugin.cs b/QuickLook.Plugin/QuickLook.Plugin.ImageViewer/Plugin.cs
index 013aa6f..2b25bff 100644
--- a/QuickLook.Plugin/QuickLook.Plugin.ImageViewer/Plugin.cs
+++ b/QuickLook.Plugin/QuickLook.Plugin.ImageViewer/Plugin.cs
@@ -49,7 +49,7 @@ namespace QuickLook.Plugin.ImageViewer
             ".sr2", ".srf", ".srw", ".svg",
             ".tga", ".tif", ".tiff",
             ".wdp", ".webp", ".wmf",
-            ".x3f"
+            ".x3f", ".xcf"
         });
 
         private ImagePanel _ip;