diff --git a/scripts/list-source-files b/scripts/list-source-files
index 4a2eed863..21320d197 100755
--- a/scripts/list-source-files
+++ b/scripts/list-source-files
@@ -1,12 +1,18 @@
 #!/bin/bash
 
+inode() {
+    ls -id "$1" | { read a b; echo "$a"; }
+}
+
 list_source_files() {
   local d r
 
   d="$(cd "$1" && echo "$PWD")"
   r="$d"
-  while [ "$r" != "/" -a ! -e "$r/.svn" -a ! -e "$r/.git" -a ! -e "$r/.hg" ]; do
-    r="$(dirname "$r")"
+  inode_root="$(inode /)"
+  while [ $(inode "$r") != "${inode_root}" -a \
+          ! -e "$r/.svn" -a ! -e "$r/.git" -a ! -e "$r/.hg" ]; do
+    r="$r/.."
   done
 
   if [ -e "$r/.svn" ]; then