diff --git a/src/backends/native/meta-kms-impl-device.c b/src/backends/native/meta-kms-impl-device.c
index 68f6f4172..4f5aa9313 100644
--- a/src/backends/native/meta-kms-impl-device.c
+++ b/src/backends/native/meta-kms-impl-device.c
@@ -87,8 +87,6 @@ G_DEFINE_TYPE_WITH_CODE (MetaKmsImplDevice, meta_kms_impl_device,
                          G_IMPLEMENT_INTERFACE (G_TYPE_INITABLE,
                                                 initable_iface_init))
 
-G_DEFINE_QUARK (-meta-kms-error-quark, meta_kms_error)
-
 MetaKmsImpl *
 meta_kms_impl_device_get_impl (MetaKmsImplDevice *impl_device)
 {
diff --git a/src/backends/native/meta-kms-impl-device.h b/src/backends/native/meta-kms-impl-device.h
index 4beb7e03e..840ee60b9 100644
--- a/src/backends/native/meta-kms-impl-device.h
+++ b/src/backends/native/meta-kms-impl-device.h
@@ -100,22 +100,12 @@ struct _MetaKmsImplDeviceClass
   void (* prepare_shutdown) (MetaKmsImplDevice *impl_device);
 };
 
-enum
-{
-  META_KMS_ERROR_USER_INHIBITED,
-  META_KMS_ERROR_DENY_LISTED,
-  META_KMS_ERROR_NOT_SUPPORTED,
-};
-
 enum
 {
   META_KMS_DEVICE_FILE_TAG_ATOMIC = 1 << 0,
   META_KMS_DEVICE_FILE_TAG_SIMPLE = 1 << 1,
 };
 
-#define META_KMS_ERROR meta_kms_error_quark ()
-GQuark meta_kms_error_quark (void);
-
 MetaKmsImpl * meta_kms_impl_device_get_impl (MetaKmsImplDevice *impl_device);
 
 MetaKmsDevice * meta_kms_impl_device_get_device (MetaKmsImplDevice *impl_device);
diff --git a/src/backends/native/meta-kms.c b/src/backends/native/meta-kms.c
index ab724f982..2ff3b5eb0 100644
--- a/src/backends/native/meta-kms.c
+++ b/src/backends/native/meta-kms.c
@@ -158,6 +158,8 @@ struct _MetaKms
 
 G_DEFINE_TYPE (MetaKms, meta_kms, META_TYPE_THREAD)
 
+G_DEFINE_QUARK (-meta-kms-error-quark, meta_kms_error)
+
 static void
 invoke_result_listener (MetaThread *thread,
                         gpointer    user_data)
diff --git a/src/backends/native/meta-kms.h b/src/backends/native/meta-kms.h
index be7b68d6c..02374b78d 100644
--- a/src/backends/native/meta-kms.h
+++ b/src/backends/native/meta-kms.h
@@ -26,12 +26,22 @@
 #include "backends/native/meta-kms-types.h"
 #include "backends/native/meta-thread.h"
 
+enum
+{
+  META_KMS_ERROR_USER_INHIBITED,
+  META_KMS_ERROR_DENY_LISTED,
+  META_KMS_ERROR_NOT_SUPPORTED,
+};
+
 typedef enum _MetaKmsFlags
 {
   META_KMS_FLAG_NONE = 0,
   META_KMS_FLAG_NO_MODE_SETTING = 1 << 0,
 } MetaKmsFlags;
 
+#define META_KMS_ERROR meta_kms_error_quark ()
+GQuark meta_kms_error_quark (void);
+
 #define META_TYPE_KMS (meta_kms_get_type ())
 G_DECLARE_FINAL_TYPE (MetaKms, meta_kms, META, KMS, MetaThread)