diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 6e33d04..6deb884 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -18,7 +18,7 @@ jobs:
 
       - name: Run shellcheck
         run: |
-          find . -type f -name "*.sh" -print0 | xargs -0 -r shellcheck -e SC1007,SC1090,SC2016
+          find . -type f -name "*.sh" -print0 | xargs -0 -r shellcheck -S error -e SC1007,SC1090,SC2016
 
       - name: Run production inventory placeholder guard self-test
         run: bash scripts/check_production_inventory_placeholders.sh --self-test
diff --git a/ops/detmir-ai/detmir-ai-profile.sh b/ops/detmir-ai/detmir-ai-profile.sh
index 1d9c405..05f0cd0 100644
--- a/ops/detmir-ai/detmir-ai-profile.sh
+++ b/ops/detmir-ai/detmir-ai-profile.sh
@@ -1,3 +1,4 @@
+# shellcheck shell=bash
 # DetMir autonomous AI helpers. Installed on Proxmox host.
 # Run `ai-test`, `detmir-check`, `detmir-dlp`, or `detmir-ai`.