diff --git a/steampunk_compendium.json b/steampunk_compendium.json
index 7453595..2ef2af1 100644
--- a/steampunk_compendium.json
+++ b/steampunk_compendium.json
@@ -369,7 +369,7 @@
             "source": "SC",
             "prerequisite": [
                 {
-                    "proficiency": [{"shields": true}]
+                    "proficiency": [{"shield": true}]
                 }
             ],
             "entries": [