diff --git a/resources/org.codeberg.wfx.Noctua.desktop b/resources/org.codeberg.wfx.Noctua.desktop
index 48af761..4cbb4b8 100644
--- a/resources/org.codeberg.wfx.Noctua.desktop
+++ b/resources/org.codeberg.wfx.Noctua.desktop
@@ -5,9 +5,8 @@ Type=Application
 Icon=org.codeberg.wfx.Noctua
 Exec=noctua %F
 Terminal=false
-Type=Application
 StartupNotify=true
 Categories=Graphics;Viewer;Utility;
-StartupWMClass=noctua
+StartupWMClass=org.codeberg.wfx.Noctua
 Keywords=image;document;pdf;viewer;cosmic;
-MimeType=
+MimeType=image/png;image/jpeg;image/gif;image/webp;image/bmp;image/tiff;image/svg+xml;application/pdf;