diff --git a/tests/datatag_table_test.cc b/tests/datatag_table_test.cc
index c3784b71..eb4f28b8 100644
--- a/tests/datatag_table_test.cc
+++ b/tests/datatag_table_test.cc
@@ -220,6 +220,7 @@ TEST(DatatageTableTest, DatatagTableToVec)
     EXPECT_EQ(0, neu_datatag_tbl_add(datatag_table, datatag2));
     EXPECT_EQ(0, neu_datatag_tbl_add(datatag_table, datatag3));
 
+    vector_free(datatags_vec);
     neu_datatag_tbl_destroy(datatag_table);
 }