diff --git a/src/pyaro_readers/eeareader/EEATimeseriesReader.py b/src/pyaro_readers/eeareader/EEATimeseriesReader.py
index dc3fbfb..3be04b6 100644
--- a/src/pyaro_readers/eeareader/EEATimeseriesReader.py
+++ b/src/pyaro_readers/eeareader/EEATimeseriesReader.py
@@ -37,7 +37,7 @@ def __init__(self, data, variable: str) -> None:
     def units(self) -> str:
         units = self._data["Unit"].unique()
         if len(units) == 0:
-            return EEAReaderException("No units present in this dataset")
+            raise EEAReaderException("No units present in this dataset")
         elif len(units) != 1:
             raise EEAReaderException("Multiple different units present in this dataset")
         return units[0]
@@ -175,7 +175,7 @@ def _transform_filters(
     filters: Iterable[pyaro.timeseries.Filter.Filter], variable_id: int
 ) -> _Filters:
     pollutant_filter = ("Pollutant", "=", variable_id)
-    validity_filter = ("Validity", "=", 1)
+    validity_filter = ("Validity", ">", 0)
 
     pyarrow_filters_daily = [pollutant_filter, validity_filter]
     pyarrow_filters_hourly = pyarrow_filters_daily.copy()