diff --git a/preprocessed/pp.py b/preprocessed/pp.py
index c79b63b..ee742d7 100644
--- a/preprocessed/pp.py
+++ b/preprocessed/pp.py
@@ -7,7 +7,7 @@
 #
 # See http://www.boost.org/libs/mpl for documentation.
 
-# $Source$
+# $Id$
 # $Date$
 # $Revision$
 
diff --git a/preprocessed/preprocess.py b/preprocessed/preprocess.py
index d5c7c24..31a1df4 100644
--- a/preprocessed/preprocess.py
+++ b/preprocessed/preprocess.py
@@ -7,7 +7,7 @@
 #
 # See http://www.boost.org/libs/mpl for documentation.
 
-# $Source$
+# $Id$
 # $Date$
 # $Revision$
 
diff --git a/preprocessed/preprocess_list.py b/preprocessed/preprocess_list.py
index 1a35d63..ae172c2 100644
--- a/preprocessed/preprocess_list.py
+++ b/preprocessed/preprocess_list.py
@@ -7,7 +7,7 @@
 #
 # See http://www.boost.org/libs/mpl for documentation.
 
-# $Source$
+# $Id$
 # $Date$
 # $Revision$
 
diff --git a/preprocessed/preprocess_map.py b/preprocessed/preprocess_map.py
index b894474..a791128 100644
--- a/preprocessed/preprocess_map.py
+++ b/preprocessed/preprocess_map.py
@@ -7,7 +7,7 @@
 #
 # See http://www.boost.org/libs/mpl for documentation.
 
-# $Source$
+# $Id$
 # $Date$
 # $Revision$
 
diff --git a/preprocessed/preprocess_set.py b/preprocessed/preprocess_set.py
index 4ca06d6..9220a9b 100644
--- a/preprocessed/preprocess_set.py
+++ b/preprocessed/preprocess_set.py
@@ -7,7 +7,7 @@
 #
 # See http://www.boost.org/libs/mpl for documentation.
 
-# $Source$
+# $Id$
 # $Date$
 # $Revision$
 
diff --git a/preprocessed/preprocess_vector.py b/preprocessed/preprocess_vector.py
index a15f56a..3de89d1 100644
--- a/preprocessed/preprocess_vector.py
+++ b/preprocessed/preprocess_vector.py
@@ -7,7 +7,7 @@
 #
 # See http://www.boost.org/libs/mpl for documentation.
 
-# $Source$
+# $Id$
 # $Date$
 # $Revision$