diff --git a/build-aux/flatpak/org.gnome.Loupe.Devel.json b/build-aux/flatpak/org.gnome.Loupe.Devel.json
index 75cd45c..57dc727 100644
--- a/build-aux/flatpak/org.gnome.Loupe.Devel.json
+++ b/build-aux/flatpak/org.gnome.Loupe.Devel.json
@@ -21,10 +21,7 @@
         "append-path" : "/usr/lib/sdk/rust-stable/bin",
         "build-args" : [
             "--share=network"
-        ],
-        "env" : {
-            "CARGO_HOME" : "/run/build/loupe/cargo"
-        }
+        ]
     },
     "cleanup" : [
         "/include",
diff --git a/meson.build b/meson.build
index dd3a4b5..5cd38b1 100644
--- a/meson.build
+++ b/meson.build
@@ -1,4 +1,4 @@
-project('loupe',
+project('loupe', 'rust',
           version: '42.alpha',
     meson_version: '>= 0.50.0',
   default_options: [ 'warning_level=2',