diff --git a/conf/app.src b/conf/app.src
index 0e661a4..8e6ea67 100644
--- a/conf/app.src
+++ b/conf/app.src
@@ -1,6 +1,6 @@
 SOURCE_URL=https://repository.yeswiki.net/doryphore/yeswiki-doryphore-2021-05-24-7.zip
 SOURCE_SUM=1172748819c73065ed940b3e3eb531dc
-SOURCE_SUM_PRG=sha256sum
+SOURCE_SUM_PRG=md5sum
 SOURCE_FORMAT=zip
 SOURCE_IN_SUBDIR=true
 SOURCE_FILENAME=yeswiki-doryphore-2021-05-24-7.zip