diff --git a/Autotools.gitignore b/Autotools.gitignore
index f4f545c9..3523288c 100644
--- a/Autotools.gitignore
+++ b/Autotools.gitignore
@@ -41,3 +41,9 @@ m4/ltoptions.m4
 m4/ltsugar.m4
 m4/ltversion.m4
 m4/lt~obsolete.m4
+
+# Generated Makefile 
+# (meta build system like autotools, 
+# can automatically generate from config.status script
+# (which is called by configure script))
+Makefile