diff --git a/src/utils/conftree.cpp b/src/utils/conftree.cpp
index 13e91aac..7cb89875 100644
--- a/src/utils/conftree.cpp
+++ b/src/utils/conftree.cpp
@@ -31,14 +31,12 @@
 #include <iostream>
 #include <cstring>
 
+using namespace std;
+
 #include "conftree.h"
 #include "pathut.h"
 #include "smallut.h"
 
-#ifndef NO_NAMESPACES
-using namespace std;
-#endif // NO_NAMESPACES
-
 #undef DEBUG
 #ifdef DEBUG
 #define LOGDEB(X) fprintf X