diff --git a/.vscode/settings.json b/.vscode/settings.json
index 0e40355..027fbc9 100644
--- a/.vscode/settings.json
+++ b/.vscode/settings.json
@@ -1,6 +1,7 @@
 {
     "cSpell.words": [
         "insideme",
+        "Shiprock",
         "wikilinks"
     ]
 }
\ No newline at end of file
diff --git a/.zs/include b/.zs/include
index 3fd99f4..84e73a5 100755
--- a/.zs/include
+++ b/.zs/include
@@ -1,5 +1,7 @@
 #!/bin/sh
 
+set -e
+
 if [ ! $# = 1 ]; then
   printf "Usage: %s <file>\n" "$(basename "$0")"
   exit 0