diff --git a/poky/scripts/lib/recipetool/setvar.py b/poky/scripts/lib/recipetool/setvar.py
index f8e2ee7..b5ad335 100644
--- a/poky/scripts/lib/recipetool/setvar.py
+++ b/poky/scripts/lib/recipetool/setvar.py
@@ -49,6 +49,7 @@
         for patch in patches:
             for line in patch:
                 sys.stdout.write(line)
+    tinfoil.modified_files()
     return 0