diff --git a/OPSI/control b/OPSI/control
index 3a07b4f..040b633 100644
--- a/OPSI/control
+++ b/OPSI/control
@@ -5,7 +5,7 @@ incremental: False
 
 [Product]
 type: localboot
-id: xlviewer
+id: microsoft.excelviewer
 name: Microsoft Excel Viewer
 description: Open, view, and print Excel workbooks, even if you don't have Excel installed.
 advice: ADVICE
diff --git a/builder-product.cfg b/builder-product.cfg
index 4455328..bf164ad 100644
--- a/builder-product.cfg
+++ b/builder-product.cfg
@@ -2,7 +2,7 @@
 # Setup product information 
 ############################
 VENDOR="microsoft.com"
-PN="xlviewer"
+PN="microsoft.excelviewer"
 VERSION="2007"
 RELEASE="1"
 PRIORITY="0"