diff --git a/src/main/java/environment/updateTemperatureInRealBasin.java b/src/main/java/environment/updateTemperatureInRealBasin.java
index 747352451e8e2e972f74a75cb1a7907397f055fd..c57370bb29a970a956eabd39ab536786c06a81e0 100644
--- a/src/main/java/environment/updateTemperatureInRealBasin.java
+++ b/src/main/java/environment/updateTemperatureInRealBasin.java
@@ -11,9 +11,9 @@ import environment.Time.Season;
 import fr.cemagref.simaqualife.kernel.processes.AquaNismsGroupProcess;
 
 public class updateTemperatureInRealBasin extends AquaNismsGroupProcess<DiadromousFish, DiadromousFishGroup> {
-	
+
 	double offshoreTemperature = 12.;
-	
+
 	public static void main(String[] args) { System.out.println((new
 			XStream(new DomDriver())) .toXML(new updateTemperatureInRealBasin())); }
 
@@ -24,18 +24,23 @@ public class updateTemperatureInRealBasin extends AquaNismsGroupProcess<Diadromo
 		if (Time.getSeason(group.getPilot()) == Season.WINTER){
 			Map<String, Double[]> temperaturesbasin = ((BasinNetworkReal) group.getEnvironment()).getTemperaturesBasin(Time.getYear(group.getPilot()));
 
-			for (Basin basin : group.getEnvironment().getBasins()){		
-				if (basin instanceof RiverBasin){
-					basin.setWinterTemperature(temperaturesbasin.get(basin.getName())[0]);
-					basin.setSpringTemperature(temperaturesbasin.get(basin.getName())[1]);
-					basin.setSummerTemperature(temperaturesbasin.get(basin.getName())[2]);
-					basin.setFallTemperature(temperaturesbasin.get(basin.getName())[3]);					
-				} else if (basin instanceof SeaBasin) {
-					basin.setWinterTemperature((offshoreTemperature + temperaturesbasin.get(group.getEnvironment().getAssociatedRiverBasin(basin).getName())[0])/2.);
-					basin.setSpringTemperature((offshoreTemperature + temperaturesbasin.get(group.getEnvironment().getAssociatedRiverBasin(basin).getName())[1])/2.);
-					basin.setSummerTemperature((offshoreTemperature + temperaturesbasin.get(group.getEnvironment().getAssociatedRiverBasin(basin).getName())[2])/2.);
-					basin.setFallTemperature((offshoreTemperature + temperaturesbasin.get(group.getEnvironment().getAssociatedRiverBasin(basin).getName())[3])/2.);
-				}		
+			if (temperaturesbasin != null) {
+				for (Basin basin : group.getEnvironment().getBasins()){		
+					if (basin instanceof RiverBasin){
+						basin.setWinterTemperature(temperaturesbasin.get(basin.getName())[0]);
+						basin.setSpringTemperature(temperaturesbasin.get(basin.getName())[1]);
+						basin.setSummerTemperature(temperaturesbasin.get(basin.getName())[2]);
+						basin.setFallTemperature(temperaturesbasin.get(basin.getName())[3]);					
+					} else if (basin instanceof SeaBasin) {
+						basin.setWinterTemperature((offshoreTemperature + temperaturesbasin.get(group.getEnvironment().getAssociatedRiverBasin(basin).getName())[0])/2.);
+						basin.setSpringTemperature((offshoreTemperature + temperaturesbasin.get(group.getEnvironment().getAssociatedRiverBasin(basin).getName())[1])/2.);
+						basin.setSummerTemperature((offshoreTemperature + temperaturesbasin.get(group.getEnvironment().getAssociatedRiverBasin(basin).getName())[2])/2.);
+						basin.setFallTemperature((offshoreTemperature + temperaturesbasin.get(group.getEnvironment().getAssociatedRiverBasin(basin).getName())[3])/2.);
+					}		
+				}
+			}
+			else {
+				System.out.println("pb with temperature at "+ Time.getYear(group.getPilot() ));
 			}
 		}
 	}