diff --git a/tests/config/test_data.config b/tests/config/test_data.config
index ff97106d..7f305cda 100644
--- a/tests/config/test_data.config
+++ b/tests/config/test_data.config
@@ -112,7 +112,7 @@ params {
             }
             'metagenome' {
                 classified_reads_alignment                     = "${test_data_dir}/genomics/sarscov2/metagenome/test_1.kraken2.reads.txt
-                report_txt                                     = "${test_data_dir}/genomics/sarscov2/metagenome/test_1.kraken2.report.txt
+                report                                         = '${test_data_dir}/genomics/sarscov2/metagenome/test_1.kraken2.report.txt
             }
         }
         'homo_sapiens' {