diff --git a/unittest/formats/test_text_file_reader.cpp b/unittest/formats/test_text_file_reader.cpp
index 3fae7ef231..a8fb0b4f7a 100644
--- a/unittest/formats/test_text_file_reader.cpp
+++ b/unittest/formats/test_text_file_reader.cpp
@@ -92,7 +92,7 @@ TEST_F(TextFileReaderTest, buffer)
     test_files();
     auto *reader = new TextFileReader("text_reader_two.file", "test");
     reader->set_bufsize(4096);
-    auto *line   = reader->next_line();
+    reader->next_line();
     ASSERT_THROW({ reader->set_bufsize(20); }, FileReaderException);
     delete reader;
 }