diff --git a/config/functions b/config/functions
index 17b248986d..552488d5e2 100644
--- a/config/functions
+++ b/config/functions
@@ -847,7 +847,7 @@ get_all_package_names() {
 calculate_stamp() {
   local stamp data
 
-  stamp="$PKG_DIR $PROJECT_DIR/$PROJECT/patches/$PKG_NAME"
+  stamp="$PKG_DIR $PROJECT_DIR/$PROJECT/patches/$PKG_NAME $PROJECT_DIR/$PROJECT/packages/$PKG_NAME"
   [ -n "$DEVICE" ] && stamp+=" $PROJECT_DIR/$PROJECT/devices/$DEVICE/patches/$PKG_NAME"
   [ -n "$PKG_NEED_UNPACK" ] && stamp+=" $PKG_NEED_UNPACK"