diff --git a/lib/bin/build_lib b/lib/bin/build_lib
index a573278b..093a33d6 100755
--- a/lib/bin/build_lib
+++ b/lib/bin/build_lib
@@ -133,6 +133,7 @@ _prepare_config() {
     if [[ $platform = windows ]]; then :
     else
         autoreconf --verbose --install --force 2> >(sed 's/^\([^:]*\):[0-9]\{1,\}: /\1: /')
+        [[ -e .git ]] && git checkout @ -- INSTALL # autoreconf installs a useless INSTALL documentation stub that can overwrite repo docs.
     fi
 
     touch "$prefix/out/.prepared"