diff -up man-db-2.6.3/src/check_mandirs.c.gcc man-db-2.6.3/src/check_mandirs.c
--- man-db-2.6.3/src/check_mandirs.c.gcc	2013-03-18 13:56:24.000000000 +0100
+++ man-db-2.6.3/src/check_mandirs.c	2013-03-18 14:03:20.081132550 +0100
@@ -440,7 +440,10 @@ static int testmandirs (const char *path
 		return 0;
 	}
 
-	chdir (path);
+	if (chdir (path) != 0) {
+		error (0, errno, _("can't change to directory %s"), path);
+		return 0;
+	}
 
 	while( (mandir = readdir (dir)) ) {
 		if (strncmp (mandir->d_name, "man", 3) != 0)