diff --git a/rsciio/tests/test_hamamatsu.py b/rsciio/tests/test_hamamatsu.py
index 666b88697..22a31a2d1 100644
--- a/rsciio/tests/test_hamamatsu.py
+++ b/rsciio/tests/test_hamamatsu.py
@@ -287,7 +287,13 @@ def test_metadata(self):
         assert metadata.General.title == metadata.General.original_filename[:-4]
 
         assert metadata.Signal.quantity == "Intensity (Counts)"
-        assert metadata.Signal.signal_type == ""
+        try:
+            import lumispy
+
+            signal_type = "Luminescence"
+        except ImportError:
+            signal_type = ""
+        assert metadata.Signal.signal_type == signal_type
 
         assert isinstance(detector.binning, tuple)
         assert len(detector.binning) == 2