diff --git a/opengrok-indexer/src/test/java/org/opengrok/indexer/history/MercurialRepositoryTest.java b/opengrok-indexer/src/test/java/org/opengrok/indexer/history/MercurialRepositoryTest.java
index 11a3e4470a3..dd2917f2f04 100644
--- a/opengrok-indexer/src/test/java/org/opengrok/indexer/history/MercurialRepositoryTest.java
+++ b/opengrok-indexer/src/test/java/org/opengrok/indexer/history/MercurialRepositoryTest.java
@@ -47,7 +47,6 @@
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collections;
-import java.util.Date;
 import java.util.List;
 import java.util.Objects;
 import java.util.Set;
@@ -476,4 +475,18 @@ void testBuildTagListInitial() throws Exception {
         expectedTags.add(tagEntry);
         assertEquals(expectedTags, tags);
     }
+
+    @Test
+    void testBuildTagListOneMore() throws Exception {
+        MercurialRepository hgRepo = (MercurialRepository) RepositoryFactory.getRepository(repositoryRoot);
+        assertNotNull(hgRepo);
+        runHgCommand(repositoryRoot, "tag", "foo");
+        hgRepo.buildTagList(new File(hgRepo.getDirectoryName()), CommandTimeoutType.INDEXER);
+        var tags = hgRepo.getTagList();
+        assertNotNull(tags);
+        assertEquals(2, tags.size());
+        Set<TagEntry> expectedTags = Set.of(new MercurialTagEntry(7, "start_of_novel"),
+                new MercurialTagEntry(9, "foo"));
+        assertEquals(expectedTags, tags);
+    }
 }