diff --git a/man/BasinObs.Rd b/man/BasinObs.Rd
index 61bd8daf1f91d0a8019dc7f5a8cfbeb8d158ba0e..69aeb559beafb76258db4426f91f3256dd7fefc0 100644
--- a/man/BasinObs.Rd
+++ b/man/BasinObs.Rd
@@ -5,7 +5,7 @@
 \title{Data sample: time series of observations of a fictional catchment (L0123001, L0123002 or L0123003)}
 \format{Data frame named 'BasinObs' containing
 \itemize{
-\item one POSIXlt vector: time series dates in the POSIXlt format
+\item one POSIXct vector: time series dates in the POSIXct format
 \item five numeric vectors: time series of catchment average precipitation [mm/time step], catchment average air temperature [°C], catchment average potential evapotranspiration [mm/time step], outlet discharge [l/s], outlet discharge [mm/time step]
 }}
 \description{