diff --git a/overlays/default.nix b/overlays/default.nix
index 8e4f16c..b139c73 100644
--- a/overlays/default.nix
+++ b/overlays/default.nix
@@ -1,3 +1,4 @@
 {
   fix-jdk8 = import ./fix-jdk8.nix;
+  freecad = import ./freecad.nix;
 }
diff --git a/overlays/freecad.nix b/overlays/freecad.nix
new file mode 100644
index 0000000..3b3918e
--- /dev/null
+++ b/overlays/freecad.nix
@@ -0,0 +1,10 @@
+final: prev: {
+  freecad = prev.freecad.overrideAttrs (old: {
+    nativeBuildInputs = (old.nativeBuildInputs or []) ++ [ final.makeWrapper ];
+
+    postFixup = (old.postFixup or "") + ''
+      wrapProgram $out/bin/FreeCAD \
+        --set QT_QPA_PLATFORM xcb
+    '';
+  });
+}