diff --git a/.github/workflows/pr-check.yml b/.github/workflows/pr-check.yml
index ad4bf69..6ab7ff2 100644
--- a/.github/workflows/pr-check.yml
+++ b/.github/workflows/pr-check.yml
@@ -101,6 +101,8 @@ jobs:
             PR_THREAD_COUNT=$(gh api repos/$GH_REPO/pulls/$PR_NUM/comments \
                 --jq '[.[] | select(.position != null)] | length')
 
+            PR_FILES=$(gh pr view "$PR_NUM" --json files --jq '.files[].path')
+
             COMMIT_COUNT="(gh api repos/$GH_REPO/pulls/$PR_NUM --jq '.commits')"
 
             CONTAINS_MASTER=$(gh api repos/$GH_REPO/pulls/$PR_NUM/commits --jq '.[1] | (.commit.author.email == "mclasen@redhat.com" and .commit.message == "Add some instructions")')
@@ -161,6 +163,18 @@ jobs:
               BLOCKED=1
             fi
 
+            if echo "$PR_FILES" | grep -qE '.*/flathub\.json$'; then
+              echo "flathub.json not at toplevel"
+              BLOCKED=1
+              REVIEW_COMMENT_LINES+=("- `flathub.json` file is at toplevel")
+            fi
+
+            if ! echo "$PR_FILES" | grep -qE '^[^/]+\.(ya?ml|json)$'; then
+              echo "No JSON/YAML files at toplevel"
+              BLOCKED=1
+              REVIEW_COMMENT_LINES+=("- Flatpak manifest is at toplevel)
+            fi
+
             CHECKLIST_PRESENT=$(printf "%s\n" "$PR_BODY" | grep -cE '^- ?\[[xX]\] [A-Za-z]+' || true)
             echo "Total checklists found: $CHECKLIST_PRESENT"
             UNCHECKED=$(printf "%s\n" "$PR_BODY" | grep -Ec '^- \[ \] [A-Za-z]+' || true)