diff --git a/test/any2ppm.c b/test/any2ppm.c
index b4c9de6fe..40c304b73 100644
--- a/test/any2ppm.c
+++ b/test/any2ppm.c
@@ -191,6 +191,7 @@ write_ppm (cairo_surface_t *surface, int fd)
 	format_str = "P5";
 	break;
     case CAIRO_FORMAT_A1:
+    case CAIRO_FORMAT_RGB16_565:
     case CAIRO_FORMAT_INVALID:
     default:
 	return "unhandled image format";