diff --git a/src/sna/sna_display.c b/src/sna/sna_display.c
index bc6e1964..7e47e738 100644
--- a/src/sna/sna_display.c
+++ b/src/sna/sna_display.c
@@ -536,6 +536,7 @@ static char *
 has_backlight(xf86OutputPtr output, int *best_type)
 {
 	static const char *known_interfaces[] = {
+		"dell_backlight",
 		"gmux_backlight",
 		"asus-laptop",
 		"asus-nb-wmi",
diff --git a/src/uxa/intel_display.c b/src/uxa/intel_display.c
index 0acb86d4..02f2dcbd 100644
--- a/src/uxa/intel_display.c
+++ b/src/uxa/intel_display.c
@@ -199,6 +199,7 @@ intel_output_backlight_init(xf86OutputPtr output)
  * List of available kernel interfaces in priority order
  */
 static const char *backlight_interfaces[] = {
+	"dell_backlight",
 	"gmux_backlight",
 	"asus-laptop",
 	"asus-nb-wmi",