diff --git a/dive.c b/dive.c
index 34025d68c..0625aa384 100644
--- a/dive.c
+++ b/dive.c
@@ -1796,6 +1796,7 @@ struct dive *merge_dives(struct dive *a, struct dive *b, int offset, gboolean pr
 	MERGE_MAX(res, a, b, number);
 	MERGE_NONZERO(res, a, b, cns);
 	MERGE_NONZERO(res, a, b, visibility);
+	MERGE_NONZERO(res, a, b, dive_tags);
 	merge_equipment(res, a, b);
 	merge_airtemps(res, a, b);
 	if (dl) {