diff --git a/src/libs/antares/study/parts/hydro/series.cpp b/src/libs/antares/study/parts/hydro/series.cpp
index 1263e732b7..f193caf97d 100644
--- a/src/libs/antares/study/parts/hydro/series.cpp
+++ b/src/libs/antares/study/parts/hydro/series.cpp
@@ -236,10 +236,11 @@ void DataSeriesHydro::reset()
     count = 1;
 }
 
-void DataSeriesHydro::resizeRORandSTORAGE(unsigned int width)
+void DataSeriesHydro::resetGenerationTS(unsigned int width)
 {
-    ror.resize(width, HOURS_PER_YEAR);
-    storage.resize(width, DAYS_PER_YEAR);
+    ror.reset(width, HOURS_PER_YEAR);
+    storage.reset(width, DAYS_PER_YEAR);
+    mingen.reset(width, HOURS_PER_YEAR);
     count = width;
 }
 
diff --git a/src/libs/antares/study/parts/hydro/series.h b/src/libs/antares/study/parts/hydro/series.h
index 08fc8dff93..68fc02140b 100644
--- a/src/libs/antares/study/parts/hydro/series.h
+++ b/src/libs/antares/study/parts/hydro/series.h
@@ -58,7 +58,7 @@ class DataSeriesHydro
     */
     void reset();
 
-    void resizeRORandSTORAGE(unsigned int width);
+    void resetGenerationTS(unsigned int width);
     void resizeGenerationTS(unsigned int w, unsigned int h);
 
     /*!
diff --git a/src/solver/ts-generator/generator.hxx b/src/solver/ts-generator/generator.hxx
index ca9021cd23..089585cbcf 100644
--- a/src/solver/ts-generator/generator.hxx
+++ b/src/solver/ts-generator/generator.hxx
@@ -59,7 +59,7 @@ inline void ResizeGeneratedTimeSeries(Data::AreaList& areas, Data::Parameters& p
         // Hydro
         if (params.timeSeriesToRefresh & Data::timeSeriesHydro)
         {
-            area.hydro.series->resizeRORandSTORAGE(params.nbTimeSeriesHydro);
+            area.hydro.series->resetGenerationTS(params.nbTimeSeriesHydro);
         }
 
         // Thermal