diff --git a/configure.in b/configure.in
index e77b1991ab..df61ba073b 100644
--- a/configure.in
+++ b/configure.in
@@ -8,12 +8,23 @@ AC_CONFIG_SRCDIR([src/switch.c])
 AC_CONFIG_HEADER([src/include/config.h])
 
 AC_PREFIX_DEFAULT(/usr/local/freeswitch)
+
 # Checks for programs.
+AC_PATH_PROGS(SVNVERSION, svnversion, [echo Missing subversion so some stuff will be borked],${PATH}:/opt/csw/bin)
 AC_PROG_CC
 AC_PROG_MAKE_SET
 AC_PROG_LIBTOOL
 AC_PROG_INSTALL
 
+# SVN Revision number, needed for FREESWITCH_VERSION
+if test -n "$SVNVERSION" ; then
+	AC_DEFINE_UNQUOTED([SVN_VERSION],"`${SVNVERSION} . -n",[Which Subversion revision are we building here ?] )
+	AC_SUBST([SVN_VERSION])
+else
+	AC_DEFINE_UNQUOTED([SVN_VERSION],"UNKNOWN",[Unknown Subversion because it's not on this machine.] )
+	AC_SUBST([SVN_VERSION])
+fi   
+
 # Checks for header files.
 AC_HEADER_DIRENT
 AC_HEADER_STDC
@@ -33,6 +44,9 @@ AC_TYPE_SIGNAL
 AC_FUNC_STRFTIME
 AC_CHECK_FUNCS([gethostname vasprintf])
 
+
+
+
 AC_CONFIG_FILES([Makefile])
 
 AM_CONDITIONAL(ISLINUX, [test `uname -s` = Linux])
@@ -40,4 +54,4 @@ AM_CONDITIONAL(ISMAC, [test `uname -s` = Darwin])
 
 
 
-AC_OUTPUT
+AC_OUTPUT([src/include/switch_version.h])
diff --git a/src/include/switch_version.h.in b/src/include/switch_version.h.in
index ff7e3b49c1..158095a96d 100644
--- a/src/include/switch_version.h.in
+++ b/src/include/switch_version.h.in
@@ -39,7 +39,7 @@ extern "C" {
 
 #define FREESWITCH_VERSION_MAJOR			1
 #define FREESWITCH_VERSION_MINOR			0
-#define FREESWITCH_VERSION_REVISION
+#define FREESWITCH_VERSION_REVISION		@SVN_VERSION@
 #define FREESWITCH_VERSION_FULL				FREESWITCH_VERSION_MAJOR.FREESWITCH_VERSION_MINOR.FREESWITCH_VERSION_REVISION
 
 #ifdef __cplusplus
diff --git a/w32/vsnet/GetLibs.vbs b/w32/vsnet/GetLibs.vbs
index 2878a0728d..7c1974a99a 100644
--- a/w32/vsnet/GetLibs.vbs
+++ b/w32/vsnet/GetLibs.vbs
@@ -112,7 +112,7 @@ If BuildCore Then
 		VERSION=strFromProc
 	Loop While Not OExec.StdOut.atEndOfStream
 
-	FindReplaceInFile FreeswitchDir & "src\include\switch_version.h", "#define FREESWITCH_VERSION_REVISION", "#define FREESWITCH_VERSION_REVISION         " & VERSION
+	FindReplaceInFile FreeswitchDir & "src\include\switch_version.h", "@SVN_VERSION@", VERSION
 
 	If Not FSO.FolderExists(LibDestDir & "include") Then
 		FSO.CreateFolder(LibDestDir & "include")