diff --git a/docker-builder-data/build/script/packet/synfigstudio-appimage.files/synfigstudio.desktop b/docker-builder-data/build/script/packet/synfigstudio-appimage.files/synfigstudio.desktop
index dcaec02..8b6f303 100644
--- a/docker-builder-data/build/script/packet/synfigstudio-appimage.files/synfigstudio.desktop
+++ b/docker-builder-data/build/script/packet/synfigstudio-appimage.files/synfigstudio.desktop
@@ -4,3 +4,4 @@ Name=Synfig Studio
 Exec=launch.sh
 Icon=synfigstudio
 Categories=Graphics;
+MimeType=application/x-sif;
diff --git a/docker-builder-data/build/script/packet/synfigstudio-appimage.sh b/docker-builder-data/build/script/packet/synfigstudio-appimage.sh
index 7f7ed0d..cb0e2d0 100644
--- a/docker-builder-data/build/script/packet/synfigstudio-appimage.sh
+++ b/docker-builder-data/build/script/packet/synfigstudio-appimage.sh
@@ -28,6 +28,11 @@ pkinstall_release() {
 
     local APPDIR="$INSTALL_RELEASE_PACKET_DIR/$PK_APPDIR_NAME.AppDir"
     copy "$ENVDEPS_RELEASE_PACKET_DIR" "$APPDIR/usr" || return 1
+    
+    mkdir -p "$APPDIR/usr/share/icons/default/128x128/apps/"
+    cp "$ENVDEPS_RELEASE_PACKET_DIR/share/pixmaps/synfig_icon.png" "$APPDIR/usr/share/icons/default/128x128/apps/synfigstudio.png" || return 1
+    mkdir -p "$APPDIR/usr/share/icons/default/128x128/mimetypes/"
+    cp "$ENVDEPS_RELEASE_PACKET_DIR/share/pixmaps/sif_icon.png" "$APPDIR/usr/share/icons/default/128x128/mimetypes/application-x-sif.png" || return 1
 
     # clean bin
     #rm -f "$APPDIR/usr/bin/"* || return 1