diff --git a/train.py b/train.py
index 38f86035..35f7d52b 100644
--- a/train.py
+++ b/train.py
@@ -225,7 +225,7 @@ if __name__ == '__main__':
     parser.add_argument('--multi-scale', default=False, help='random image sizes per batch 320 - 608')
     parser.add_argument('--img-size', type=int, default=32 * 13, help='pixels')
     parser.add_argument('--resume', action='store_true', help='resume training flag')
-    parser.add_argument('--report', default=False, help='report TP, FP, FN, P and R per batch (slower)')
+    parser.add_argument('--report', action='store_true', help='report TP, FP, FN, P and R per batch (slower)')
     parser.add_argument('--freeze-darknet53', default=False, help='freeze darknet53.conv.74 layers for first epoch')
     parser.add_argument('--var', type=float, default=0, help='optional test variable')
     opt = parser.parse_args()