diff --git a/.gitignore b/.gitignore
index cbd57c7fece..1deb93bcf5b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -241,6 +241,8 @@ xcuserdata/
 [Rr]eleases/
 x64/
 x86/
+# Not build results, this is Theora source code.
+!thirdparty/libtheora/x86/
 [Ww][Ii][Nn]32/
 [Aa][Rr][Mm]/
 [Aa][Rr][Mm]64/