diff --git a/chainercv/datasets/sbd/sbd_instance_segmentation_dataset.py b/chainercv/datasets/sbd/sbd_instance_segmentation_dataset.py
index e6e4ca67e0..5cf658ee1e 100644
--- a/chainercv/datasets/sbd/sbd_instance_segmentation_dataset.py
+++ b/chainercv/datasets/sbd/sbd_instance_segmentation_dataset.py
@@ -18,7 +18,7 @@
 def _check_available():
     if not _available:
         warnings.warn(
-            'SciPy is not installed in your environment,',
+            'SciPy is not installed in your environment,'
             'so the dataset cannot be loaded.'
             'Please install SciPy to load dataset.\n\n'
             '$ pip install scipy')