diff --git a/src/h12title b/src/h12title
index b5f6026..a004f75 100755
--- a/src/h12title
+++ b/src/h12title
@@ -36,9 +36,15 @@ main()
       | grep '<h1' \
       | head -n1 \
       | grep -oP '(?<=>)[^<]+' \
-  )
+  ) || {
+    echo 'error: h12title: failed to locate heading' >&2
+    exit 1
+  }
 
-  sed "s#$placeholder#${title/&/\\&}#" <<< "$body"
+  sed "s#$placeholder#${title/&/\\&}#" <<< "$body" || {
+    printf "error: h12title: failed title replacement: '%s'\n" "$title" >&2
+    exit 1
+  }
 }
 
 main "$@"
diff --git a/src/post2html b/src/post2html
index b332338..7fca77d 100755
--- a/src/post2html
+++ b/src/post2html
@@ -135,7 +135,7 @@ main()
   pandoc -f"$( pexts )" -thtml5 \
          --standalone --template src/pandoc.tpl \
          --metadata pagetitle:ignoreme \
-         --base-header-level=1 \
+         --wrap none \
          -B <( src/mkheader post @__PAGE_TITLE__@ ) \
          -A src/footer.tpl.htm \
          < <( prefmt < "$file" ) \