diff --git a/mambareport/openmamba-makereport b/mambareport/openmamba-makereport
index 130e0e9..3af524a 100755
--- a/mambareport/openmamba-makereport
+++ b/mambareport/openmamba-makereport
@@ -2,7 +2,7 @@
 #
 # openmamba system report generation tool
 #
-# Copyright (c) 2008-2011 by Silvan Calarco <silvan.calarco@mambasoft.it>
+# Copyright (c) 2008-2013 by Silvan Calarco <silvan.calarco@mambasoft.it>
 #
 
 VERSION=20110807
@@ -22,12 +22,9 @@ TEMPFILE=`tempfile`
    SYSTEM_SERIAL_NUMBER=unknown
 }
 
-SYSTEM_MANUFACTURER=`echo $SYSTEM_MANUFACTURER | tr ' ' _`
-SYSTEM_MANUFACTURER=`echo $SYSTEM_MANUFACTURER | tr '-' _`
-SYSTEM_PRODUCT_NAME=`echo $SYSTEM_PRODUCT_NAME | tr ' ' _`
-SYSTEM_PRODUCT_NAME=`echo $SYSTEM_PRODUCT_NAME | tr '-' _`
-SYSTEM_SERIAL_NUMBER=`echo $SYSTEM_SERIAL_NUMBER | tr ' ' _`
-SYSTEM_SERIAL_NUMBER=`echo $SYSTEM_SERIAL_NUMBER | tr '-' _`
+SYSTEM_MANUFACTURER=`echo $SYSTEM_MANUFACTURER | tr ' ' _ | tr '-' _ | tr '/' _`
+SYSTEM_PRODUCT_NAME=`echo $SYSTEM_PRODUCT_NAME | tr ' ' _ | tr '-' _ | tr '/' _`
+SYSTEM_SERIAL_NUMBER=`echo $SYSTEM_SERIAL_NUMBER | tr ' ' _ | tr '-' _ | tr '/' _`
 
 REPORTNAME="openmamba-report-$SYSTEM_MANUFACTURER-$SYSTEM_PRODUCT_NAME-$SYSTEM_SERIAL_NUMBER.txt"
 
@@ -126,7 +123,7 @@ _EOF
 }
 
 echo "openmamba report generation tool $VERSION"
-echo "Copyright (c) 2008-2011 by Silvan Calarco"
+echo "Copyright (c) 2008-2013 by Silvan Calarco"
 echo
 
 [ $UID = 0 ] || {