diff --git a/local/patches/mesa/08-meson-redox-kms-drm.patch b/local/patches/mesa/08-meson-redox-kms-drm.patch
new file mode 100644
index 0000000000..dad944b2f1
--- /dev/null
+++ b/local/patches/mesa/08-meson-redox-kms-drm.patch
@@ -0,0 +1,20 @@
+--- a/meson.build
++++ b/meson.build
+@@ -156,7 +156,7 @@
+ 
+ with_any_opengl = with_opengl or with_gles1 or with_gles2
+ 
+-system_has_kms_drm = ['openbsd', 'netbsd', 'freebsd', 'gnu/kfreebsd', 'dragonfly', 'linux', 'sunos', 'android', 'managarm'].contains(host_machine.system())
++system_has_kms_drm = ['openbsd', 'netbsd', 'freebsd', 'gnu/kfreebsd', 'dragonfly', 'linux', 'sunos', 'android', 'managarm', 'redox'].contains(host_machine.system())
+ 
+ gallium_drivers = get_option('gallium-drivers')
+ if gallium_drivers.contains('auto')
+@@ -1205,7 +1205,7 @@
+ endif
+ 
+ # TODO: this is very incomplete
+-if ['linux', 'cygwin', 'gnu', 'freebsd', 'gnu/kfreebsd', 'haiku', 'android', 'managarm'].contains(host_machine.system())
++if ['linux', 'cygwin', 'gnu', 'freebsd', 'gnu/kfreebsd', 'haiku', 'android', 'managarm', 'redox'].contains(host_machine.system())
+   pre_args += '-D_GNU_SOURCE'
+ elif host_machine.system() == 'sunos'
+   pre_args += '-D__EXTENSIONS__'
diff --git a/local/recipes/libs/mesa/recipe.toml b/local/recipes/libs/mesa/recipe.toml
index 5113010e9e..c6ad50f37b 100644
--- a/local/recipes/libs/mesa/recipe.toml
+++ b/local/recipes/libs/mesa/recipe.toml
@@ -15,6 +15,10 @@ patches = [
     "mesa/02-gbm-dumb-prime-export.patch",
     "mesa/04-sys-ioccom-stub-header.patch",
     "mesa/05-vk-sync-wchar-include.patch",
+    # Persist the Redox EGL/DRI gate: add 'redox' to meson's system_has_kms_drm
+    # (enables with_dri → with_egl/gbm) and to the _GNU_SOURCE platform list.
+    # Was an untracked in-place edit lost on every clean re-extract.
+    "mesa/08-meson-redox-kms-drm.patch",
 ]
 [build]
 template = "custom"