diff --git a/src/org.kde.koko.desktop b/src/org.kde.koko.desktop
--- a/src/org.kde.koko.desktop
+++ b/src/org.kde.koko.desktop
@@ -75,3 +75,4 @@
 Type=Application
 Categories=Qt;KDE;Graphics;Viewer;
 Icon=koko
+MimeType=image/gif;image/jpeg;image/png;image/bmp;image/x-eps;image/x-ico;image/x-portable-bitmap;image/x-portable-graymap;image/x-portable-pixmap;image/x-xbitmap;image/x-xpixmap;image/tiff;image/x-psd;image/x-webp;image/webp;