diff --git a/src/pyaro_readers/actrisebas/ActrisEbasReader.py b/src/pyaro_readers/actrisebas/ActrisEbasReader.py
index b09f117..0509461 100644
--- a/src/pyaro_readers/actrisebas/ActrisEbasReader.py
+++ b/src/pyaro_readers/actrisebas/ActrisEbasReader.py
@@ -417,7 +417,7 @@ def _read(
                             ebas_unit = tmp_data[_data_var].attrs["ebas_unit"]
                             if netcdf_unit != ebas_unit:
                                 logger.error(
-                                    f"var {_data_var} unit mismatch: unit arr: {netcdf_unit}; ebas_unit attr: {ebas_unit} for URL {url}")
+                                    f"var {_data_var} unit mismatch: unit attr: {netcdf_unit}; ebas_unit attr: {ebas_unit} for URL {url}")
 
 
                             # assert f"station {site_name}, file #{f_idx}: found matching standard_name {std_name}"
diff --git a/tests/test_PyerocomBinding.py b/tests/test_PyerocomBinding.py
index 8c1c80d..4fbe0f7 100644
--- a/tests/test_PyerocomBinding.py
+++ b/tests/test_PyerocomBinding.py
@@ -11,7 +11,8 @@ class TestPyaroReaderPyaerocom(unittest.TestCase):
     }
     AERONETVAR = "od440aer"
     # ACTRISEBASVAR = "concso4t"
-    ACTRISEBASVAR = "vmro3"
+    ACTRISEBASVAR = "concso4c"
+    # ACTRISEBASVAR = "vmro3"
     ACTRISEBASVARLIST = ["concso4t", "concso4c"]
 
     def test_pyaerocom_aeronet(self):