diff --git a/src/Driver/Driver_Mesh.cxx b/src/Driver/Driver_Mesh.cxx
index fe716dab0..4c0436d1d 100644
--- a/src/Driver/Driver_Mesh.cxx
+++ b/src/Driver/Driver_Mesh.cxx
@@ -28,7 +28,7 @@
 
 #include "SMESH_Comment.hxx"
 
-#define _DEBUG_
+//#define _DEBUG_
 #include <utilities.h>
 
 using namespace std;
diff --git a/src/DriverCGNS/DriverCGNS_Read.cxx b/src/DriverCGNS/DriverCGNS_Read.cxx
index 3db2ad821..48b1a3a28 100644
--- a/src/DriverCGNS/DriverCGNS_Read.cxx
+++ b/src/DriverCGNS/DriverCGNS_Read.cxx
@@ -22,7 +22,7 @@
 // File      : DriverCGNS_Read.cxx
 // Created   : Thu Jun 30 10:33:31 2011
 // Author    : Edward AGAPOV (eap)
-#define _DEBUG_
+//#define _DEBUG_
 #include <utilities.h>
 
 #include "DriverCGNS_Read.hxx"