diff --git a/PKGBUILD b/PKGBUILD
index bff0975..fa9c6ec 100644
--- a/PKGBUILD
+++ b/PKGBUILD
@@ -70,6 +70,10 @@ optdepends=(
   'xdg-desktop-portal: desktop integration'
 )
 
+find_program(
+    DESKTOP_APP_GDBUSCODEGEN
+    gdbus-codegen
+)
 # Updated by scripts/update-pkgbuild.sh for each upstream release.
 _tdlib_commit='51743dfd01dff6179e2d8f7095729caa4e2222e9'