diff --git a/math/genvector/inc/Math/GenVector/Cartesian2D.h b/math/genvector/inc/Math/GenVector/Cartesian2D.h
index b12794c790afad19142e34a401af6c233aba446b..d1c6809a32fc7b8065457c59f290bac3cde92f20 100644
--- a/math/genvector/inc/Math/GenVector/Cartesian2D.h
+++ b/math/genvector/inc/Math/GenVector/Cartesian2D.h
@@ -1,4 +1,4 @@
-// @(#)root/mathcore:$Id$
+// @(#)root/mathcore:$Id: b12794c790afad19142e34a401af6c233aba446b $
 // Authors: W. Brown, M. Fischler, L. Moneta    2005  
 
  /**********************************************************************
@@ -47,7 +47,7 @@ public :
    /**
       Default constructor  with x=y=0 
    */
-   Cartesian2D() : fX(0), fY(0)  {  }
+   Cartesian2D() : fX(0.0), fY(0.0)  {  }
 
    /**
       Constructor from x,y  coordinates
diff --git a/math/genvector/inc/Math/GenVector/Cartesian3D.h b/math/genvector/inc/Math/GenVector/Cartesian3D.h
index 2fd203872f434b1e4e74933903abb3429494ea6f..c5afa1f538731dbee8dd147c82d8253fa8208d93 100644
--- a/math/genvector/inc/Math/GenVector/Cartesian3D.h
+++ b/math/genvector/inc/Math/GenVector/Cartesian3D.h
@@ -1,4 +1,4 @@
-// @(#)root/mathcore:$Id$
+// @(#)root/mathcore:$Id: 2fd203872f434b1e4e74933903abb3429494ea6f $
 // Authors: W. Brown, M. Fischler, L. Moneta    2005  
 
  /**********************************************************************
@@ -57,7 +57,7 @@ public :
    /**
       Default constructor  with x=y=z=0 
    */
-   Cartesian3D() : fX(0), fY(0), fZ(0) {  }
+   Cartesian3D() : fX(0.0), fY(0.0), fZ(0.0) {  }
 
    /**
       Constructor from x,y,z coordinates
diff --git a/math/genvector/inc/Math/GenVector/PxPyPzE4D.h b/math/genvector/inc/Math/GenVector/PxPyPzE4D.h
index 04c6d98020d7178ed5f0884f9466bca32b031565..74caf923ab3b5060b50facca0c29a7acbdefe53d 100644
--- a/math/genvector/inc/Math/GenVector/PxPyPzE4D.h
+++ b/math/genvector/inc/Math/GenVector/PxPyPzE4D.h
@@ -1,4 +1,4 @@
-// @(#)root/mathcore:$Id$
+// @(#)root/mathcore:$Id: 04c6d98020d7178ed5f0884f9466bca32b031565 $
 // Authors: W. Brown, M. Fischler, L. Moneta    2005  
 
 /**********************************************************************
@@ -13,7 +13,7 @@
 // Created by: fischler at Wed Jul 20   2005
 //   (starting from PxPyPzE4D by moneta)
 // 
-// Last update: $Id$
+// Last update: $Id: 04c6d98020d7178ed5f0884f9466bca32b031565 $
 // 
 #ifndef ROOT_Math_GenVector_PxPyPzE4D 
 #define ROOT_Math_GenVector_PxPyPzE4D  1
@@ -54,7 +54,7 @@ public :
    /**
       Default constructor  with x=y=z=t=0 
    */
-   PxPyPzE4D() : fX(0), fY(0), fZ(0), fT(0) { }
+   PxPyPzE4D() : fX(0.0), fY(0.0), fZ(0.0), fT(0.0) { }
 
 
    /**
diff --git a/math/genvector/inc/Math/GenVector/PxPyPzM4D.h b/math/genvector/inc/Math/GenVector/PxPyPzM4D.h
index 464c29f33a8bbd8462a3e15b7e4c30c6f5b74a30..135af63c01cc7aa56592c77c6a1ee4ddf53cbd33 100644
--- a/math/genvector/inc/Math/GenVector/PxPyPzM4D.h
+++ b/math/genvector/inc/Math/GenVector/PxPyPzM4D.h
@@ -1,4 +1,4 @@
-// @(#)root/mathcore:$Id$
+// @(#)root/mathcore:$Id: 464c29f33a8bbd8462a3e15b7e4c30c6f5b74a30 $
 // Authors: W. Brown, M. Fischler, L. Moneta    2005  
 
 /**********************************************************************
@@ -13,7 +13,7 @@
 // Created by: fischler at Wed Jul 20   2005
 //   (starting from PxPyPzM4D by moneta)
 // 
-// Last update: $Id$
+// Last update: $Id: 464c29f33a8bbd8462a3e15b7e4c30c6f5b74a30 $
 // 
 #ifndef ROOT_Math_GenVector_PxPyPzM4D 
 #define ROOT_Math_GenVector_PxPyPzM4D  1
@@ -59,7 +59,7 @@ public :
    /**
       Default constructor  with x=y=z=m=0 
    */
-   PxPyPzM4D() : fX(0), fY(0), fZ(0), fM(0) { }
+   PxPyPzM4D() : fX(0.0), fY(0.0), fZ(0.0), fM(0.0) { }
 
 
    /**