1 files changed, 2 insertions, 2 deletions
diff --git a/src/util/html.js b/src/util/html.js
index 818c5804..65a06440 100644
--- a/src/util/html.js
+++ b/src/util/html.js
@@ -666,11 +666,11 @@ export class Template {
         const {type} = description;
         if (type === 'html') {
           if (!isHTML(value)) {
-            throw new TypeError(`Slot expects html (tag, template or blank), got ${value}`);
+            throw new TypeError(`Slot expects html (tag, template or blank), got ${typeof value}`);
           }
         } else {
           if (typeof value !== type) {
-            throw new TypeError(`Slot expects ${type}, got ${value}`);
+            throw new TypeError(`Slot expects ${type}, got ${typeof value}`);
           }
         }
       }