diff --git a/src/libmwereader/mwereader.cpp b/src/libmwereader/mwereader.cpp
index 933a2a04b3133c5b891ddee939cc6bf7367ce99c..be491d7ba025b0993e7503998b4bc350514c9aef 100644
--- a/src/libmwereader/mwereader.cpp
+++ b/src/libmwereader/mwereader.cpp
@@ -135,6 +135,7 @@ bool MWEReader::registered = TokenReader::register_path_reader<MWEReader>(
 			tokens[head]->create_metadata();
 		}
 		TokenMetaDataPtr md = tokens[head]->get_metadata();
+		std::cout << "mwe_base: " << new_base;
 		md->set_attribute(get_annotation_channel_base_name(), new_base);
 
 		// annotate mwe elements with annotation_number of head