diff --git a/test/unit/tool_util/mulled/test_mulled_update_singularity_containers.py b/test/unit/tool_util/mulled/test_mulled_update_singularity_containers.py
index 728757b52f31..9ec4e47b44f8 100644
--- a/test/unit/tool_util/mulled/test_mulled_update_singularity_containers.py
+++ b/test/unit/tool_util/mulled/test_mulled_update_singularity_containers.py
@@ -46,6 +46,6 @@ def test_singularity_container_test(tmp_path) -> None:
         "singularity",
         tmp_path,
     )
-    assert "samtools:1.0--1" in results["passed"]
-    assert "pybigwig:0.3.22--py36h54a71a5_0" in results["passed"]
-    assert "yasm:1.3.0--0" in results["notest"]
+    assert "samtools:1.0--1" in results["passed"], results
+    assert "pybigwig:0.3.22--py36h54a71a5_0" in results["passed"], results
+    assert "yasm:1.3.0--0" in results["notest"], results