diff --git a/trunk/paradiseo-mo/src/continuator/moSolutionStat.h b/trunk/paradiseo-mo/src/continuator/moSolutionStat.h
index f28f0c8a5..17a997e25 100644
--- a/trunk/paradiseo-mo/src/continuator/moSolutionStat.h
+++ b/trunk/paradiseo-mo/src/continuator/moSolutionStat.h
@@ -53,7 +53,7 @@ public :
      * @param _description a description of the parameter
      */
     moSolutionStat(std::string _description = "solution"):
-            moStat<EOT, EOT>(EOT(), _description) {}
+      moStat<EOT, EOT>(EOT(), _description) {  }
 
     /**
      * Initialization the solution by copy
diff --git a/trunk/paradiseo-mo/src/continuator/moVectorMonitor.h b/trunk/paradiseo-mo/src/continuator/moVectorMonitor.h
index 66f7a6ba2..b762ded7a 100644
--- a/trunk/paradiseo-mo/src/continuator/moVectorMonitor.h
+++ b/trunk/paradiseo-mo/src/continuator/moVectorMonitor.h
@@ -54,21 +54,30 @@ public:
 	 * @param _param the parameter of type double to save in the vector
 	 */
 	moVectorMonitor(eoValueParam<double> & _param) : doubleParam(&_param), intParam(NULL), eotParam(NULL)
-	{ }
+	{ 
+		// precision of the output by default
+		precisionOutput = std::cout.precision();
+	}
 
 	/**
 	 * Default Constructor
 	 * @param _param the parameter of type unsigned int to save in the vector
 	 */
 	moVectorMonitor(eoValueParam<unsigned int> & _param) : doubleParam(NULL), intParam(&_param), eotParam(NULL)
-	{ }
+	{ 
+		// precision of the output by default
+		precisionOutput = std::cout.precision();
+	}
 
 	/**
 	 * Default Constructor
 	 * @param _param the parameter of type EOT to save in the vector
 	 */
 	moVectorMonitor(eoValueParam<EOT> & _param) : doubleParam(NULL), intParam(NULL), eotParam(&_param)
-	{ }
+	{ 
+		// precision of the output by default
+		precisionOutput = std::cout.precision();
+	}
 
 	/**
 	 * Default Constructor
@@ -76,7 +85,10 @@ public:
 	 */
 	template <class ScalarType, class Compare>
 	moVectorMonitor(eoValueParam<eoScalarFitness<ScalarType, Compare> > & _param) : doubleParam( & (eoValueParam<double>&)_param), intParam(NULL), eotParam(NULL)
-	{ }
+	{ 
+		// precision of the output by default
+		precisionOutput = std::cout.precision();
+	}
 
 	/**
 	 * Default Constructor
@@ -139,6 +151,9 @@ public:
 	std::string getValue(unsigned int i) const {
 		std::ostringstream os;
 
+		// set the precision of the output
+		os.precision(precisionOutput);
+
 		if (eotParam == NULL)
 			os << (valueVec[i]) ;
 		else
@@ -166,6 +181,14 @@ public:
 			return eotVec.size();
 	}
 
+	/**
+	 * to set the precision of the output file
+	 * @param _precision precision of the output (number of digit)
+	 */
+	void precision(unsigned int _precision) {
+	  precisionOutput = _precision;
+	}
+
 	/**
 	 * to export the vector of values into one file
 	 * @param _filename file name
@@ -209,6 +232,10 @@ protected:
 
 	std::vector<double> valueVec;
 	std::vector<EOT> eotVec;
+
+  // precision of the output
+  unsigned int precisionOutput;
+
 };