diff --git a/VC2013/.gitignore b/VC2013/.gitignore
index d958abab6..9d46443bd 100644
--- a/VC2013/.gitignore
+++ b/VC2013/.gitignore
@@ -7,3 +7,4 @@ ipch/**
 *.ncb
 *.suo
 *.obj
+*.sdf