This data set is a minor correction to the original CHASE-PL Future Hydrology dataset published in 4TU Centre for Research Data in 2017 (https://doi.org/10.4121/uuid:931bc857-9261-4bd8-b76c-ce5586948df3) and described in the data descriptor article (https://www.mdpi.com/2306-5729/2/2/14). It was comprised of future projections of hydrological variables obtained with the help of the SWAT model driven with an ensemble of nine bias-corrected EURO-CORDEX climate simulations for the Vistula and Odra basins. A bug was identified in the AggregatedModelOutputs.zip file containing multi-model ensemble statistics of the relative changes in mean seasonal and annual variables developed in a GIS format. In the present version the file structure remains unchanged, while the values have been corrected. Three other major files of the CPL-FH dataset (ClimateScenarios.zip, RawModelOutputs.zip and Txtinout.zip) are not a part of this correction.