diff --git a/build/windows/jhbuild/clean b/build/windows/jhbuild/clean
index fdd5728792..ce6f1cfff2 100755
--- a/build/windows/jhbuild/clean
+++ b/build/windows/jhbuild/clean
@@ -2,6 +2,7 @@
 
 pushd checkout
 rm -rf *-*/
+find . -maxdepth 1 -type f -atime +25 -print -delete
 popd
 
 if [[ "$1" != "--skip-targets" ]]; then