diff --git a/libcorpus2/tagset.cpp b/libcorpus2/tagset.cpp
index 91d17d25d761444b55e52e905154755cab64e159..aed32a33ea83e498ddff188ce7be6631fb619396 100644
--- a/libcorpus2/tagset.cpp
+++ b/libcorpus2/tagset.cpp
@@ -338,7 +338,6 @@ Tag Tagset::make_tag(idx_t pos_idx, mask_t values,
 						if (mode & ParseFailWithIgn) {
 							return make_ign_tag();
 						}
-						std::cerr << mode << "\n";
 						throw TagParseError("Required attribute missing",
 							tag_to_string(Tag(get_pos_mask(pos_idx), values)),
 							get_attribute_name(a), id_string());