diff --git a/fs/fs.c b/fs/fs.c
index 0a5b61a..c9226f9 100644
--- a/fs/fs.c
+++ b/fs/fs.c
@@ -246,7 +246,7 @@
  *
  * Return: Path with links resolved. Allocated, must be freed after use.
  */
-char *canonicalize_dir(const char *pathname)
+static char *canonicalize_dir(const char *pathname)
 {
 	char *f, *d, *r, *ret, *p;
 	char *freep1, *freep2;