diff --git a/contrib/guix/guix-build b/contrib/guix/guix-build
index e242c02..2959025 100755
--- a/contrib/guix/guix-build
+++ b/contrib/guix/guix-build
@@ -440,6 +440,7 @@ EOF
                                  --keep-failed \
                                  --fallback \
                                  --link-profile \
+                                 --user="user" \
                                  --root="$(profiledir_for_host "${HOST}")" \
                                  ${SUBSTITUTE_URLS:+--substitute-urls="$SUBSTITUTE_URLS"} \
                                  ${ADDITIONAL_GUIX_COMMON_FLAGS} ${ADDITIONAL_GUIX_ENVIRONMENT_FLAGS} \