diff --git a/build-aux/flatpak/org.gtk.Demo4.json b/build-aux/flatpak/org.gtk.Demo4.json
index 5c75ece589..94d2206d8c 100644
--- a/build-aux/flatpak/org.gtk.Demo4.json
+++ b/build-aux/flatpak/org.gtk.Demo4.json
@@ -185,7 +185,6 @@
             "builddir" : true,
             "config-opts" : [
                 "--libdir=/app/lib",
-                "-Dvulkan=disabled",
                 "-Dbuildtype=debugoptimized",
                 "-Ddemo-profile=devel"
             ],
diff --git a/build-aux/flatpak/org.gtk.IconBrowser4.json b/build-aux/flatpak/org.gtk.IconBrowser4.json
index b563dbb285..41a3ee68be 100644
--- a/build-aux/flatpak/org.gtk.IconBrowser4.json
+++ b/build-aux/flatpak/org.gtk.IconBrowser4.json
@@ -114,7 +114,6 @@
             "builddir" : true,
             "config-opts" : [
                 "--libdir=/app/lib",
-                "-Dvulkan=disabled",
                 "-Dbuildtype=debugoptimized",
                 "-Ddemo-profile=devel"
             ],
diff --git a/build-aux/flatpak/org.gtk.WidgetFactory4.json b/build-aux/flatpak/org.gtk.WidgetFactory4.json
index 390da50cac..2f46171518 100644
--- a/build-aux/flatpak/org.gtk.WidgetFactory4.json
+++ b/build-aux/flatpak/org.gtk.WidgetFactory4.json
@@ -114,7 +114,6 @@
             "builddir" : true,
             "config-opts" : [
                 "--libdir=/app/lib",
-                "-Dvulkan=disabled",
                 "-Dbuildtype=debugoptimized",
                 "-Ddemo-profile=devel"
             ],
@@ -131,7 +130,6 @@
         "env" : {
             "DBUS_SESSION_BUS_ADDRESS" : "''",
             "GSK_RENDERER" : "opengl",
-            "GDK_DEBUG" : "vulkan-disable",
             "G_ENABLE_DEBUG" : "true"
         }
     }
diff --git a/build-aux/flatpak/org.gtk.gtk4.NodeEditor.json b/build-aux/flatpak/org.gtk.gtk4.NodeEditor.json
index ef60c66084..d775c44465 100644
--- a/build-aux/flatpak/org.gtk.gtk4.NodeEditor.json
+++ b/build-aux/flatpak/org.gtk.gtk4.NodeEditor.json
@@ -114,7 +114,6 @@
             "builddir" : true,
             "config-opts" : [
                 "--libdir=/app/lib",
-                "-Dvulkan=disabled",
                 "-Dbuildtype=debugoptimized",
                 "-Ddemo-profile=devel"
             ],
@@ -131,7 +130,6 @@
         "env" : {
             "DBUS_SESSION_BUS_ADDRESS" : "''",
             "GSK_RENDERER" : "opengl",
-            "GDK_DEBUG" : "vulkan-disable",
             "G_ENABLE_DEBUG" : "true"
         }
     }