diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 6957e067cd2cf6bb9730b92f361397f343c1501b..e5362d1c3219c9f2278c190890554d5e99b75fc7 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -61,10 +61,10 @@ setup:
       BASESUITE=unstable
     fi
     runuser -u build -- mmdebstrap --architecture=amd64 --variant=buildd --mode=unshare \
-      --chrooted-customize-hook='rm /usr/bin/ischroot && ln -s /bin/true /usr/bin/ischroot' ${IFS #1056385} \
+      --chrooted-customize-hook='rm /usr/bin/ischroot && ln -s /bin/true /usr/bin/ischroot' ${IFS# DebianBug:1056385} \
       $BASESUITE chroot-amd64.tar
     runuser -u build -- mmdebstrap --architecture=arm64 --variant=buildd --mode=unshare \
-      --chrooted-customize-hook='rm /usr/bin/ischroot && ln -s /bin/true /usr/bin/ischroot' ${IFS #1056385} \
+      --chrooted-customize-hook='rm /usr/bin/ischroot && ln -s /bin/true /usr/bin/ischroot' ${IFS# DebianBug:1056385} \
       $BASESUITE chroot-arm64.tar
     runuser -u build -- sh -x ./setup.sh