diff --git a/tools/convert_driving_data.cpp b/tools/convert_driving_data.cpp
index 6c720607aa7..4ed024176d2 100644
--- a/tools/convert_driving_data.cpp
+++ b/tools/convert_driving_data.cpp
@@ -148,7 +148,7 @@ int main(int argc, char** argv) {
       box->set_img_height(resize_height);
     }
     if (!ReadImageToDatum(image_path, 0,
-        resize_height, resize_width, is_color, data.mutable_car_image_datum())) {
+        resize_height, resize_width, is_color, data.mutable_car_image_datum(), FLAGS_use_rgb)) {
       continue;
     }