diff --git a/smoketest/scenarios/30-upgrade-from-baseline.sh b/smoketest/scenarios/30-upgrade-from-baseline.sh
index e118026..c170eb9 100644
--- a/smoketest/scenarios/30-upgrade-from-baseline.sh
+++ b/smoketest/scenarios/30-upgrade-from-baseline.sh
@@ -42,6 +42,13 @@ scenario() {
   assert_status 0
 
   cd_install
+  # voxtype's build from source fails now and then (Vulkan shaders missing at
+  # link time), and the baseline isn't what's under test: try once more, as
+  # someone would. The installer skips what it already installed
+  if [ "$STATUS" -ne 0 ]; then
+    echo "The baseline's install failed; running it once more"
+    cd_install
+  fi
   assert_status 0
   run_in_vm reset "sudo rm /etc/polkit-1/rules.d/00-smoketest-flatpak.rules
     git -C ~/.local/share/coredesktop reset -q --hard $(q "$sha")"