diff --git a/libfwupdplugin/fu-efivar.c b/libfwupdplugin/fu-efivar.c
index 0bde17fd6..e976ee202 100644
--- a/libfwupdplugin/fu-efivar.c
+++ b/libfwupdplugin/fu-efivar.c
@@ -69,13 +69,13 @@ fu_efivar_supported (GError **error)
 #endif
 }
 
+#ifndef _WIN32
 static gboolean
 fu_efivar_set_immutable_fd (int fd,
 			     gboolean value,
 			     gboolean *value_old,
 			     GError **error)
 {
-#ifndef _WIN32
 	guint flags;
 	gboolean is_immutable;
 	int rc;
@@ -124,14 +124,8 @@ fu_efivar_set_immutable_fd (int fd,
 		return FALSE;
 	}
 	return TRUE;
-#else
-	g_set_error_literal (error,
-			     FWUPD_ERROR,
-			     FWUPD_ERROR_NOT_SUPPORTED,
-			     "efivarfs not currently supported on Windows");
-	return FALSE;
-#endif
 }
+#endif
 
 static gboolean
 fu_efivar_set_immutable (const gchar *fn,
diff --git a/libfwupdplugin/fu-udev-device.c b/libfwupdplugin/fu-udev-device.c
index 631faa1d9..c66672ba6 100644
--- a/libfwupdplugin/fu-udev-device.c
+++ b/libfwupdplugin/fu-udev-device.c
@@ -195,10 +195,10 @@ fu_udev_device_set_device_file (FuUdevDevice *self, const gchar *device_file)
 	g_object_notify (G_OBJECT (self), "device-file");
 }
 
+#ifdef HAVE_GUDEV
 static const gchar *
 fu_udev_device_get_vendor_fallback (GUdevDevice *udev_device)
 {
-#ifdef HAVE_GUDEV
 	const gchar *tmp;
 	tmp = g_udev_device_get_property (udev_device, "ID_VENDOR_FROM_DATABASE");
 	if (tmp != NULL)
@@ -206,9 +206,9 @@ fu_udev_device_get_vendor_fallback (GUdevDevice *udev_device)
 	tmp = g_udev_device_get_property (udev_device, "ID_VENDOR");
 	if (tmp != NULL)
 		return tmp;
-#endif
 	return NULL;
 }
+#endif
 
 #ifdef HAVE_GUDEV
 static gboolean