diff --git a/image/base/mkosi.postinst b/image/base/mkosi.postinst
index 9e02d6c321..62b6806541 100755
--- a/image/base/mkosi.postinst
+++ b/image/base/mkosi.postinst
@@ -10,7 +10,7 @@ mv "${BUILDROOT}/etc/issue.d" "${BUILDROOT}/usr/lib/issue.d" || true
 
 # generate reproducible package manifest
 mkdir -p "${BUILDROOT}/usr/share/constellation"
-rpm -qa --qf '%{name};%{version};%{license}\n' --dbpath "${BUILDROOT}/var/lib/rpm/" | LC_ALL=C sort | tee "${BUILDROOT}/usr/share/constellation/packagemanifest"
+mkosi-chroot rpm -qa --qf '%{name};%{version};%{license}\n' --dbpath "/var/lib/rpm/" | LC_ALL=C sort | tee "${BUILDROOT}/usr/share/constellation/packagemanifest"
 cp "${BUILDROOT}/usr/share/constellation/packagemanifest" "${OUTPUTDIR}/"
 
 # copy rpmdb to outputs