diff --git a/src/utility/bitmap.cpp b/src/utility/bitmap.cpp
index 89a5782..33b6026 100644
--- a/src/utility/bitmap.cpp
+++ b/src/utility/bitmap.cpp
@@ -67,7 +67,9 @@ void Bitmap::setpixel(
 }
 
 
-
+// TODO: format filename
+//char f[100];
+//snprintf(f, 100, "/tmp/%i.bmp", c);
 void Bitmap::save(const char *filename) const {
 
 	uint8_t header[54] = {