diff --git a/owlps-positioner/src/csvstringreader.cc b/owlps-positioner/src/csvstringreader.cc
index b6b18f8..5f68f5b 100644
--- a/owlps-positioner/src/csvstringreader.cc
+++ b/owlps-positioner/src/csvstringreader.cc
@@ -52,6 +52,13 @@ using namespace boost ;
 /* *** Constructors *** */
 
 
+CSVStringReader::
+CSVStringReader(const std::string &_str, const char _separator):
+  separator(_separator), current_token(NULL), current_field_nb(0)
+{
+  set_str(_str) ;
+}
+
 CSVStringReader::~CSVStringReader()
 {
   delete current_token ;
@@ -63,10 +70,7 @@ CSVStringReader::~CSVStringReader()
 
 
 /**
- * Note that this function is not called by the constructor, so you
- * must manually call it to set a string to process prior to use
- * read_field().
- * @return \em false in case of error (EOF, etc.), \em true else.
+ * @returns \em false in case of error (EOF, etc.), \em true else.
  */
 void CSVStringReader::set_str(const string &_str)
 {
diff --git a/owlps-positioner/src/csvstringreader.hh b/owlps-positioner/src/csvstringreader.hh
index ab35f3f..751802e 100644
--- a/owlps-positioner/src/csvstringreader.hh
+++ b/owlps-positioner/src/csvstringreader.hh
@@ -68,6 +68,8 @@ public:
   CSVStringReader(const char _separator = ';'):
     separator(_separator), current_token(NULL), current_field_nb(0) {}
 
+  CSVStringReader(const std::string &_str, const char _separator = ';') ;
+
   virtual ~CSVStringReader(void) ;
 
   /** @name Accessors */