diff --git a/.gitignore b/.gitignore
index 56853490a9..0e96cc15fa 100644
--- a/.gitignore
+++ b/.gitignore
@@ -15,6 +15,7 @@
 *.o
 *.d
 *.sdf
+*.opensdf
 xcuserdata
 *.xccheckout
 contents.xcworkspacedata