diff --git a/test.py b/test.py
index f8739866..df5a886b 100644
--- a/test.py
+++ b/test.py
@@ -75,7 +75,7 @@ def test(
                 for di, d in enumerate(detections):
                     jdict.append({
                         'image_id': int(Path(paths[si]).stem.split('_')[-1]),
-                        'category_id': coco91class(int(d[6])),
+                        'category_id': coco91class[int(d[6])],
                         'bbox': [float3(x) for x in box[di]],
                         'score': float3(d[4] * d[5])
                     })
diff --git a/utils/gcp.sh b/utils/gcp.sh
index 7315c3c2..208871a3 100755
--- a/utils/gcp.sh
+++ b/utils/gcp.sh
@@ -7,7 +7,7 @@ bash yolov3/data/get_coco_dataset.sh
 # Start
 sudo rm -rf yolov3 && git clone https://github.com/ultralytics/yolov3
 sudo rm -rf cocoapi && git clone https://github.com/cocodataset/cocoapi && cd cocoapi/PythonAPI && make && cd ../.. && cp -r cocoapi/PythonAPI/pycocotools yolov3
-cd yolov3 && python3 test.py --coco-map
+cd yolov3 && python3 test.py --save-json
 
 # Resume
 python3 train.py --resume