diff --git a/src/BooleanGUI/BooleanGUI.cxx b/src/BooleanGUI/BooleanGUI.cxx
index 98df1e213..e233311b2 100644
--- a/src/BooleanGUI/BooleanGUI.cxx
+++ b/src/BooleanGUI/BooleanGUI.cxx
@@ -26,7 +26,7 @@
 //  Module : GEOM
 //  $Header$
 
-using namespace std;
+
 #include "BooleanGUI.h"
 
 #include "SUIT_Desktop.h"
@@ -34,6 +34,8 @@ using namespace std;
 
 #include "GeometryGUI.h"
 
+using namespace std;
+
 BooleanGUI* BooleanGUI::myGUIObject = 0;
 
 //=======================================================================
diff --git a/src/BooleanGUI/BooleanGUI_Dialog.cxx b/src/BooleanGUI/BooleanGUI_Dialog.cxx
index 7944e5116..a50f0881c 100644
--- a/src/BooleanGUI/BooleanGUI_Dialog.cxx
+++ b/src/BooleanGUI/BooleanGUI_Dialog.cxx
@@ -26,7 +26,6 @@
 //  Module : GEOM
 //  $Header$
 
-using namespace std;
 #include "BooleanGUI_Dialog.h"
 #include "BooleanGUI.h"
 #include "DlgRef_2Sel_QTD.h"
@@ -37,6 +36,8 @@ using namespace std;
 
 #include <qlabel.h>
 
+using namespace std;
+
 //=================================================================================
 // class    : BooleanGUI_Dialog()
 // purpose  : Constructs a BooleanGUI_Dialog which is a child of 'parent', with the