diff --git a/DESCRIPTION b/DESCRIPTION
index 774a1d598235ad002e68b3c1ddfb85a3e11e27e5..5486f42c3d313ff663aa0aeb21d549c19f981cc8 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -1,8 +1,8 @@
 Package: airGR
 Type: Package
 Title: Suite of GR Hydrological Models for Precipitation-Runoff Modelling
-Version: 1.4.4.25
-Date: 2020-04-20
+Version: 1.4.4.26
+Date: 2020-04-30
 Authors@R: c(
   person("Laurent", "Coron", role = c("aut", "trl"), comment = c(ORCID = "0000-0002-1503-6204")),
   person("Olivier", "Delaigue", role = c("aut", "cre"), comment = c(ORCID = "0000-0002-7668-8468"), email = "airGR@inrae.fr"),
diff --git a/NEWS.md b/NEWS.md
index 4abe9bfaa5bd9e33ec38e105ad3107501e129ef1..33a677327c3b33f199aaf8dd66f48ae649a9fc14 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -4,7 +4,7 @@
 
 
 
-### 1.4.4.25 Release Notes (2020-04-20)
+### 1.4.4.26 Release Notes (2020-04-30)
 
 #### New features
 
diff --git a/R/SeriesAggreg2.R b/R/SeriesAggreg2.R
index a0da112431fdab5d2c4cec9414d8c6eb598616a6..4da98e9b21f3e7eca3835cafc6a3a39fbc5b92dd 100644
--- a/R/SeriesAggreg2.R
+++ b/R/SeriesAggreg2.R
@@ -82,6 +82,7 @@ SeriesAggreg2 <- function(TabSeries, Format, TimeFormat, NewTimeFormat, ConvertF
   
   
   TabSeries0 <- TabSeries
+  colnames(TabSeries0)[1L] <- "DatesR"
   TabSeries0$DatesR <- TabSeries0$DatesR + TimeLag
   
   TabSeries2 <- TabSeries0