diff --git a/utils/datasets.py b/utils/datasets.py
index e28c6da5..66c9feb7 100755
--- a/utils/datasets.py
+++ b/utils/datasets.py
@@ -269,7 +269,7 @@ class LoadImagesAndLabels(Dataset):  # for training/testing
             img, ratiow, ratioh, padw, padh = letterbox(img, new_shape=shape, mode='rect')
         else:
             shape = self.img_size
-            img, ratiow, ratioh, padw, padh = letterbox(img, new_shape=shape, mode='scaleFill')
+            img, ratiow, ratioh, padw, padh = letterbox(img, new_shape=shape, mode='square')
 
         # Load labels
         labels = []
diff --git a/utils/gcp.sh b/utils/gcp.sh
index 34d7c1c0..9780baa4 100755
--- a/utils/gcp.sh
+++ b/utils/gcp.sh
@@ -95,6 +95,8 @@ python3 test.py --data ../supermarket2/supermarket2.data --weights ../darknet/ba
 
 
 # Debug/Development
-python3 train.py --data data/coco.data --img-size 416 --batch-size 8 --accumulate 8
+python3 train.py --data data/coco.data --img-size 320 --single-scale --batch-size 32 --accumulate 2 --epochs 1
+python3 test.py --weights weights/latest.pt --cfg cfg/yolov3-spp.cfg --img-size 320
+
 gsutil cp evolve.txt gs://ultralytics
 sudo shutdown