diff --git a/pom.xml b/pom.xml
index e8d00deb778e29322581d0408e93a85ca5d35f23..2c0e41818a2aa59019bddf24092299ff358713f9 100644
--- a/pom.xml
+++ b/pom.xml
@@ -8,7 +8,7 @@
 
     <groupId>fr.cemagref</groupId>
     <artifactId>observation</artifactId>
-    <version>0.1.5-SNAPSHOT</version>
+    <version>0.1.6</version>
 
     <dependencies>
         <dependency>
@@ -67,16 +67,16 @@
     <packaging>jar</packaging>
 
     <scm>
-        <connection>scm:svn:http://trac.clermont.cemagref.fr/svn/LISC/Observation/branches/observation-0.1.1</connection>
-        <url>http://trac.clermont.cemagref.fr/projets/LISC/browser/Observation/branches/observation-0.1.1</url>
+        <connection>scm:svn:http://trac.clermont.cemagref.fr/svn/LISC/Observation/tags/observation-0.1.6</connection>
+        <url>http://trac.clermont.cemagref.fr/projets/LISC/browser/Observation/tags/observation-0.1.6</url>
     </scm>
     <build>
         <plugins>
             <plugin>
                 <artifactId>maven-compiler-plugin</artifactId>
                 <configuration>
-                    <source>1.7</source>
-                    <target>1.7</target>
+                    <source>1.6</source>
+                    <target>1.6</target>
                 </configuration>
             </plugin>
             <plugin>
diff --git a/src/main/java/fr/cemagref/observation/kernel/ObservableManager.java b/src/main/java/fr/cemagref/observation/kernel/ObservableManager.java
index 8b57054ca74a4c359264269973a50364ea0f2e5b..5cb0209137c851bcdd6cf89a58c3aede6a97ca4f 100644
--- a/src/main/java/fr/cemagref/observation/kernel/ObservableManager.java
+++ b/src/main/java/fr/cemagref/observation/kernel/ObservableManager.java
@@ -118,7 +118,7 @@ public class ObservableManager implements ListModel {
     }
 
     public void setObservers(Reader observablesReader, XStream xstream) {
-        Map<Class, ObservablesHandler> orderedMap = new LinkedHashMap<>((Map<Class, ObservablesHandler>)xstream.fromXML(observablesReader));
+        Map<Class, ObservablesHandler> orderedMap = new LinkedHashMap<Class, ObservablesHandler>((Map<Class, ObservablesHandler>)xstream.fromXML(observablesReader));
          for (Map.Entry<Class, ObservablesHandler> entry : orderedMap.entrySet()) {
             // add to the list of observers those readed from the file
             ObservablesHandler clObservable = addObservable(entry.getKey());
diff --git a/src/main/java/fr/cemagref/observation/observers/jfreechart/ChartPanelAdds.java b/src/main/java/fr/cemagref/observation/observers/jfreechart/ChartPanelAdds.java
index d7ba49c52ad437726b10a1f4921eba0d7edddb47..e9b1bdc279ff66988e714fbd07f1be449591bc73 100644
--- a/src/main/java/fr/cemagref/observation/observers/jfreechart/ChartPanelAdds.java
+++ b/src/main/java/fr/cemagref/observation/observers/jfreechart/ChartPanelAdds.java
@@ -57,24 +57,18 @@ public class ChartPanelAdds extends ChartPanel {
                 if (!filename.endsWith(extension)) {
                     filename = filename + extension;
                 }
-                switch (extension) {
-                    case ".png":
+                if (extension.equals(".png")) {
                         ChartUtilities.saveChartAsPNG(new File(filename), this.getChart(),
                                 getWidth(), getHeight());
-                        break;
-                    case ".jpg":
+                } else if (extension.equals(".jpg")) {
                         ChartUtilities.saveChartAsJPEG(new File(filename), this.getChart(),
                                 getWidth(), getHeight());
-                        break;
-                    case ".pdf":
+                } else if (extension.equals(".pdf")) {
                         writeChartAsPDF(new File(filename), this.getChart(),
                                 getWidth(), getHeight(),new DefaultFontMapper());
-
-                        break;
-                    default:
+                } else {
                         ChartUtilities.saveChartAsPNG(new File(filename), this.getChart(),
                                 getWidth(), getHeight());
-                        break;
                 }
             }