diff --git a/dockerfile/anaconda-iso-creator/lorax-build b/dockerfile/anaconda-iso-creator/lorax-build
index 8deb0affb86b..971d306115c2 100755
--- a/dockerfile/anaconda-iso-creator/lorax-build
+++ b/dockerfile/anaconda-iso-creator/lorax-build
@@ -44,6 +44,7 @@ lorax -p Fedora -v "$VERSION_ID" -r "$VERSION_ID" \
       --volid Fedora-S-dvd-x86_64-rawh \
       -s http://dl.fedoraproject.org/pub/fedora/linux/development/rawhide/Everything/x86_64/os/ \
       -s file://$REPO_DIR/ \
+      --roofs-size 5 \
       "$@" \
       output || cp *.log "$OUT_DIR"