diff --git a/res/freedesktop/solvespace-flatpak.desktop.in b/res/freedesktop/solvespace-flatpak.desktop.in
index b16ccf44..c80b67ad 100644
--- a/res/freedesktop/solvespace-flatpak.desktop.in
+++ b/res/freedesktop/solvespace-flatpak.desktop.in
@@ -6,5 +6,5 @@ Exec=${CMAKE_INSTALL_FULL_BINDIR}/solvespace
 MimeType=application/x-solvespace
 Icon=com.solvespace.SolveSpace
 Type=Application
-Categories=Graphics
+Categories=Graphics;3DGraphics;Engineering;
 Keywords=parametric;cad;2d;3d;
diff --git a/res/freedesktop/solvespace-snap.desktop b/res/freedesktop/solvespace-snap.desktop
index 8441258c..da0dda13 100644
--- a/res/freedesktop/solvespace-snap.desktop
+++ b/res/freedesktop/solvespace-snap.desktop
@@ -6,5 +6,5 @@ Exec=solvespace
 MimeType=application/x-solvespace
 Icon=${SNAP}/meta/icons/hicolor/scalable/apps/snap.solvespace.svg
 Type=Application
-Categories=Graphics
+Categories=Graphics;3DGraphics;Engineering;
 Keywords=parametric;cad;2d;3d;
diff --git a/res/freedesktop/solvespace.desktop.in b/res/freedesktop/solvespace.desktop.in
index 8c6fb24a..87e6863c 100644
--- a/res/freedesktop/solvespace.desktop.in
+++ b/res/freedesktop/solvespace.desktop.in
@@ -6,5 +6,5 @@ Exec=${CMAKE_INSTALL_FULL_BINDIR}/solvespace
 MimeType=application/x-solvespace
 Icon=solvespace
 Type=Application
-Categories=Graphics
+Categories=Graphics;3DGraphics;Engineering;
 Keywords=parametric;cad;2d;3d;