diff --git a/pysegcnn/core/dataset.py b/pysegcnn/core/dataset.py
index fdd0df9cb50d2f422ce54e52b4e8a23e560abd26..596b731c8ab0fba9ae2c39cdb58ba7f0dbe5d5c9 100644
--- a/pysegcnn/core/dataset.py
+++ b/pysegcnn/core/dataset.py
@@ -229,7 +229,8 @@ class ImageDataset(Dataset):
         # remove labels to merge from dataset instance labels
         for k, v in self.merge_labels.items():
             self._labels.pop(getattr(self.label_class, k).id)
-            LOGGER.info('Merging label: {} -> {}.'.format(k, v))
+            LOGGER.info('{}, merging label: {} -> {}.'.format(
+                self.__class__.__name__, k, v))
 
         # create model class labels
         # map the original class labels to an ascending sequence of integers