diff --git a/build-aux/meson_post_install.py b/build-aux/meson_post_install.py
index 8cd5ad8..aefcadf 100644
--- a/build-aux/meson_post_install.py
+++ b/build-aux/meson_post_install.py
@@ -7,10 +7,12 @@ import subprocess
 install_prefix = os.environ['MESON_INSTALL_PREFIX']
 
 if not os.environ.get('DESTDIR'):
-    print('Updating icon cache…')
     icon_cache_dir = os.path.join(install_prefix, 'share', 'icons', 'hicolor')
-    subprocess.call(['gtk-update-icon-cache', '-qtf', icon_cache_dir])
+    if os.path.exists(icon_cache_dir):
+        print('Updating icon cache…')
+        subprocess.call(['gtk-update-icon-cache', '-qtf', icon_cache_dir])
 
-    print('Updating desktop database…')
     desktop_database_dir = os.path.join(install_prefix, 'share', 'applications')
-    subprocess.call(['update-desktop-database', '-q', desktop_database_dir])
+    if os.path.exists(desktop_database_dir):
+        print('Updating desktop database…')
+        subprocess.call(['update-desktop-database', '-q', desktop_database_dir])