diff --git a/.gitignore b/.gitignore
index 60305807..70fcb545 100644
--- a/.gitignore
+++ b/.gitignore
@@ -14,6 +14,7 @@ INSTALL
 Makefile.in
 Makefile
 ac_cfg.h.in
+ac_cfg.h.in~
 aclocal.m4
 autom4te.cache
 configure