diff --git a/configure.ac b/configure.ac
index d0684205..ff8e39fa 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,5 +1,5 @@
 AC_INIT(nix, m4_esyscmd([bash -c "echo -n $(cat ./version)$VERSION_SUFFIX"]))
-AC_CONFIG_SRCDIR(README)
+AC_CONFIG_SRCDIR(README.md)
 AC_CONFIG_AUX_DIR(config)
 
 AC_PROG_SED