diff --git a/repos/os/include/os/pixel_alpha8.h b/repos/os/include/os/pixel_alpha8.h
index f3e051b14c..4ba1718c0f 100644
--- a/repos/os/include/os/pixel_alpha8.h
+++ b/repos/os/include/os/pixel_alpha8.h
@@ -18,9 +18,11 @@
 
 namespace Genode {
 
-	using Pixel_alpha8 = Genode::Pixel_rgba<uint8_t, Genode::Surface_base::ALPHA8,
-	                                        0, 0, 0, 0, 0, 0, 0xff, 0>;
+	using Pixel_alpha8 = Pixel_rgba<uint8_t, Surface_base::ALPHA8,
+	                                0, 0, 0, 0, 0, 0, 0xff, 0>;
 
+	using Pixel_input8 = Pixel_rgba<uint8_t, Surface_base::INPUT8,
+	                                0, 0, 0, 0, 0, 0, 0xff, 0>;
 
 	/*
 	 * The second pixel parameter is ignored. It can be of any pixel type.
diff --git a/repos/os/include/os/surface.h b/repos/os/include/os/surface.h
index 881f32593c..f61befa53b 100644
--- a/repos/os/include/os/surface.h
+++ b/repos/os/include/os/surface.h
@@ -46,7 +46,7 @@ class Genode::Surface_base : Interface
 		using Point = Rect::Point;
 		using Area  = Rect::Area;
 
-		enum Pixel_format { UNKNOWN, RGB565, RGB888, ALPHA8 };
+		enum Pixel_format { UNKNOWN, RGB565, RGB888, ALPHA8, INPUT8 };
 
 		struct Flusher : Interface
 		{