diff --git a/src/commoncode/ignore.py b/src/commoncode/ignore.py
index f1ff280bb0e..c053cec2a5d 100644
--- a/src/commoncode/ignore.py
+++ b/src/commoncode/ignore.py
@@ -202,7 +202,6 @@ def get_ignores(location, include_defaults=True):
     "stamp-h1": "Default ignore: autoconf artifact",
     "m4/": "Default ignore: autoconf artifact",
     "autogen.sh": "Default ignore: autotools artifact",
-    "autogen.sh": "Default ignore: autotools artifact",
     "CMakeCache.txt": "Default ignore: CMake artifact",
     "cmake_install.cmake": "Default ignore: CMake artifact",
     "install_manifest.txt": "Default ignore: CMake artifact",