diff --git a/migrate.df b/migrate.df
index ad2f167..aa7b7ea 100644
--- a/migrate.df
+++ b/migrate.df
@@ -13,7 +13,7 @@ RUN url=http://auto.mirror.devuan.org/merged \
     && echo "deb $url jessie          main" >  /etc/apt/sources.list \
     && echo "deb $url jessie-updates  main" >> /etc/apt/sources.list \
     && echo "deb $url jessie-security main" >> /etc/apt/sources.list \
-    && (rm /etc/apt/sources.list.d/* || true) \
+    && find /etc/apt/sources.list.d -type f -delete \
     && apt-key add /tmp/repository@devuan.org.asc \
     && apt-get update -q \
     && DEBIAN_FRONTEND=noninteractive apt-get install devuan-keyring -q -y \