diff --git a/grass.cpp b/grass.cpp
index 06068ce..6e362cd 100644
--- a/grass.cpp
+++ b/grass.cpp
@@ -59,8 +59,6 @@ extern "C"
 
 #define GRASS_MAX_COLORS 100000  // what is the right value
 
-CPL_CVSID("$Id$")
-
 /************************************************************************/
 /*                         Grass2CPLErrorHook()                         */
 /************************************************************************/
diff --git a/ogrgrassdatasource.cpp b/ogrgrassdatasource.cpp
index 4220a52..7edd57d 100644
--- a/ogrgrassdatasource.cpp
+++ b/ogrgrassdatasource.cpp
@@ -31,8 +31,6 @@
 #include "cpl_conv.h"
 #include "cpl_string.h"
 
-CPL_CVSID("$Id$")
-
 /************************************************************************/
 /*                         Grass2CPLErrorHook()                         */
 /************************************************************************/
diff --git a/ogrgrassdriver.cpp b/ogrgrassdriver.cpp
index bc83cad..a33fde4 100644
--- a/ogrgrassdriver.cpp
+++ b/ogrgrassdriver.cpp
@@ -35,8 +35,6 @@ extern "C"
     void RegisterOGRGRASS();
 }
 
-CPL_CVSID("$Id$")
-
 /************************************************************************/
 /*                                Open()                                */
 /************************************************************************/
diff --git a/ogrgrasslayer.cpp b/ogrgrasslayer.cpp
index 7e7938e..09a6731 100644
--- a/ogrgrasslayer.cpp
+++ b/ogrgrasslayer.cpp
@@ -31,8 +31,6 @@
 #include "ogrgrass.h"
 #include "cpl_conv.h"
 
-CPL_CVSID("$Id$")
-
 /************************************************************************/
 /*                           OGRGRASSLayer()                            */
 /************************************************************************/