diff --git a/owlps-positioner/src/csvfilereader.cc b/owlps-positioner/src/csvfilereader.cc
index d7182c2..b46e028 100644
--- a/owlps-positioner/src/csvfilereader.cc
+++ b/owlps-positioner/src/csvfilereader.cc
@@ -18,7 +18,6 @@
 #include <iostream>
 
 using namespace std ;
-using namespace boost ;
 
 
 
diff --git a/owlps-positioner/src/csvstringreader.cc b/owlps-positioner/src/csvstringreader.cc
index 74046a0..ec7b204 100644
--- a/owlps-positioner/src/csvstringreader.cc
+++ b/owlps-positioner/src/csvstringreader.cc
@@ -18,7 +18,10 @@
 #include <iostream>
 
 using namespace std ;
-using namespace boost ;
+using boost::tokenizer ;
+using boost::escaped_list_separator ;
+using boost::lexical_cast ;
+using boost::bad_lexical_cast ;