diff --git a/homeassistant/components/recorder/statistics.py b/homeassistant/components/recorder/statistics.py
index 9a66c4542b5..e5fbfe0e8c5 100644
--- a/homeassistant/components/recorder/statistics.py
+++ b/homeassistant/components/recorder/statistics.py
@@ -134,7 +134,6 @@ STATISTIC_UNIT_TO_UNIT_CONVERTER: dict[str | None, type[BaseUnitConverter]] = {
         for unit in BloodGlugoseConcentrationConverter.VALID_UNITS
     },
     **{unit: ConductivityConverter for unit in ConductivityConverter.VALID_UNITS},
-    **{unit: ConductivityConverter for unit in ConductivityConverter.VALID_UNITS},
     **{unit: DataRateConverter for unit in DataRateConverter.VALID_UNITS},
     **{unit: DistanceConverter for unit in DistanceConverter.VALID_UNITS},
     **{unit: DurationConverter for unit in DurationConverter.VALID_UNITS},