diff --git a/owlps-positioning/src/textfilewriter.cc b/owlps-positioning/src/textfilewriter.cc
index eaca319..6da0502 100644
--- a/owlps-positioning/src/textfilewriter.cc
+++ b/owlps-positioning/src/textfilewriter.cc
@@ -40,6 +40,6 @@ bool TextFileWriter::write_text(const string &text)
   if (! file)
     return false ;
 
-  file << text.c_str() ;
+  file << text ;
   return true ;
 }