diff --git a/.gitignore b/.gitignore
index 5abcc3138..356bf6399 100644
--- a/.gitignore
+++ b/.gitignore
@@ -9,6 +9,7 @@ output/*
 
 # a file generated by cmake
 dfhack/include/config.h
+library/private/config.h
 
 # any build folders
 build*/