diff --git a/exp/kerokero/train.py b/exp/kerokero/train.py
--- a/exp/kerokero/train.py
+++ b/exp/kerokero/train.py
@@ -79,9 +79,9 @@ if args.load_model:
 
 log.info("loading data...")
 with np.load(args.data) as data:
-	trainImages=data["trainImages"].reshape((-1,224,224,1))
+	trainImages=(np.float32(data["trainImages"])/128-1).reshape((-1,224,224,1))
 	trainLabels=data["trainLabels"].reshape((-1,4,2))
-	testImages=data["testImages"].reshape((-1,224,224,1))
+	testImages=(np.float32(data["testImages"])/128-1).reshape((-1,224,224,1))
 	testLabels=data["testLabels"].reshape((-1,4,2))
 log.info("done")