diff --git a/utils/createfs.py b/utils/createfs.py
index 43eaf3eb..7b7fe637 100755
--- a/utils/createfs.py
+++ b/utils/createfs.py
@@ -26,7 +26,7 @@ def recurse(root, tree, count = 0):
             continue
 
         entry = [name, T_FILE, s.st_uid, s.st_gid, s.st_size, s.st_mode, \
-            int(s.st_ctime), [], None, None]
+            int(s.st_mtime), [], None, None]
 
         if S_ISLNK(s[ST_MODE]):
             entry[A_TYPE] = T_LINK