diff --git a/chainercv/utils/image/read_image.py b/chainercv/utils/image/read_image.py
index 5a068e4bd1..6421831ab7 100644
--- a/chainercv/utils/image/read_image.py
+++ b/chainercv/utils/image/read_image.py
@@ -127,5 +127,5 @@ def read_image(path, dtype=np.float32, color=True, alpha=None):
     elif chainer.config.cv_read_image_backend == 'PIL':
         return _read_image_pil(path, dtype, color, alpha)
     else:
-        raise ValueError('chainer.config.cv_read_image_backend should be '
-                         'either "cv2" or "PIL".')
+        raise ValueError('chainer.global_config.cv_read_image_backend should '
+                         'be either "cv2" or "PIL".')