diff --git a/.gitignore b/.gitignore
index 42e24fe41..eff0e18cb 100644
--- a/.gitignore
+++ b/.gitignore
@@ -183,6 +183,7 @@ test-*.trs
 
 /src/nm-online/nm-online
 
+/m4/build-to-host.m4
 /m4/codeset.m4
 /m4/gettext.m4
 /m4/glibc2.m4