diff --git a/src/InputOutput/IHMImpl/Params/PlotImpl/IHMInputOutputParamsPlotClass.php b/src/InputOutput/IHMImpl/Params/PlotImpl/IHMInputOutputParamsPlotClass.php
index d998dd1..66f8901 100644
--- a/src/InputOutput/IHMImpl/Params/PlotImpl/IHMInputOutputParamsPlotClass.php
+++ b/src/InputOutput/IHMImpl/Params/PlotImpl/IHMInputOutputParamsPlotClass.php
@@ -720,7 +720,11 @@ class IHMInputOutputParamsPlotClass extends IHMInputOutputParamsAbstractClass
 				case 'ispectro' :
 					$paramNode = $plotNode->getParams()->getParamById($paramInfo['id']);
 					$this->unmarshallInstantSpectro($paramData->{'param-drawing-object'}, $plotNode, $paramNode, $paramInfo['indexes']);
-					break;	
+					break;
+				case 'intervals' :
+					$paramNode = $plotNode->getParams()->getParamById($paramInfo['id']);
+					$this->unmarshallIntervals($paramData->{'param-drawing-object'}, $paramNode);
+					break;
 				default :
 					throw new Exception('Drawing type not implemented.');
 			}
@@ -1012,6 +1016,11 @@ class IHMInputOutputParamsPlotClass extends IHMInputOutputParamsAbstractClass
 		foreach ($indexes as $index)
 			$paramNode->addStatusBar($index);
 	}
+
+	protected function unmarshallIntervals($paramDrawingData, $paramNode)
+	{
+		$paramNode->addIntervals();
+	}
 	
 	protected function unmarshallTickBar($paramDrawingData, $paramNode, $indexes)
 	{
diff --git a/src/Request/ParamsRequestImpl/Nodes/Requests/RequestOutputPlotParamsNodeClass.php b/src/Request/ParamsRequestImpl/Nodes/Requests/RequestOutputPlotParamsNodeClass.php
index 1a21048..1604f99 100644
--- a/src/Request/ParamsRequestImpl/Nodes/Requests/RequestOutputPlotParamsNodeClass.php
+++ b/src/Request/ParamsRequestImpl/Nodes/Requests/RequestOutputPlotParamsNodeClass.php
@@ -38,6 +38,8 @@ define ("REQUESTOUTPUTPLOTSTATUSBAR_INDEX", "index");
 define ("REQUESTOUTPUTPLOTTICKBAR_NAME", "serie");
 define ("REQUESTOUTPUTPLOTTICKBAR_INDEX", "index");
 
+define ("REQUESTOUTPUTPLOTINTERVALS_NAME", "intervals");
+
 /**
  * @class RequestOutputPlotParamNodeClass
  * @brief Definition of a param for a plot of a plot request
@@ -177,6 +179,13 @@ class RequestOutputPlotParamNodeClass extends NodeClass
 		$this->addChild($tickBarNode);
 		return $tickBarNode;
 	}
+
+	public function addIntervals()
+	{
+		$intervalsNode = new NodeClass(REQUESTOUTPUTPLOTINTERVALS_NAME);
+		$this->addChild($intervalsNode);
+		return $intervalsNode;
+	}
 	
 	public function loadFromNode($xmlNode)
 	{
--
libgit2 0.21.2