diff --git a/Global/VisualStudio.gitignore b/Global/VisualStudio.gitignore
index 845a488a..04ba113b 100644
--- a/Global/VisualStudio.gitignore
+++ b/Global/VisualStudio.gitignore
@@ -64,3 +64,9 @@ stylecop.*
 ~$*
 *.dbmdl
 Generated_Code #added for RIA/Silverlight projects
+
+# Backup & report files from converting an old project file to a newer
+# Visual Studio version. Backup files are not needed, because we have git ;-)
+_UpgradeReport_Files/
+Backup/
+UpgradeLog.XML