diff --git a/www-client/src/main/java/fr/agrometinfo/www/client/view/RightPanelView.java b/www-client/src/main/java/fr/agrometinfo/www/client/view/RightPanelView.java
index 77405825e48fe9a4d324dae7e0ac9b5b37f0bcff..d4b796aa2a6164402a2dfcc6e931b11952c6f8cc 100644
--- a/www-client/src/main/java/fr/agrometinfo/www/client/view/RightPanelView.java
+++ b/www-client/src/main/java/fr/agrometinfo/www/client/view/RightPanelView.java
@@ -272,7 +272,13 @@ public final class RightPanelView implements RightPanelPresenter.View {
         comparisonCard.setTitle(CSTS.normalComparison());
         comparisonCard.setSubTitle(CSTS.comparisonPeriod());
         if (data.getComparedValue() != null) {
-            comparisonCard.setValue(nf.format(data.getComparedValue()) + " " + indicator.getUnit());
+            final String sign;
+            if (data.getComparedValue() > 0) {
+                sign = "+";
+            } else {
+                sign = "";
+            }
+            comparisonCard.setValue(sign + nf.format(data.getComparedValue()) + " " + indicator.getUnit());
         } else {
             comparisonCard.setValue("null");
         }