diff --git a/build-aux/flatpak/com.github.GradienceTeam.Gradience.Devel.json b/build-aux/flatpak/com.github.GradienceTeam.Gradience.Devel.json
index 0b87b1ce..f5cfc6b8 100644
--- a/build-aux/flatpak/com.github.GradienceTeam.Gradience.Devel.json
+++ b/build-aux/flatpak/com.github.GradienceTeam.Gradience.Devel.json
@@ -106,7 +106,7 @@
             "config-opts": [
                 "-Ddocs=false",
                 "-Dvapi=false",
-                "-Dbackends=gtk4"
+                "-Dbackend-gtk4=enabled"
             ],
             "sources": [
                 {