diff --git a/src/directive.rs b/src/directive.rs
index 8531742..672f67e 100644
--- a/src/directive.rs
+++ b/src/directive.rs
@@ -281,9 +281,9 @@ mod tests {
                 ("speech", Type::Speech),
                 ("character", Type::Character),
                 ("duration", Type::Duration),
-                ("scene", Type::Asset { tags: ["scene"] }),
-                ("background", Type::Asset { tags: ["background"] }),
-                ("stage position", Type::Enum(["close", "left third", "right third", "left", "center", "right", "far left", "mid left", "mid right", "far right", "far"])),
+                ("scene", Type::Asset { tags: Vec::from(["scene"].map(String::from)) }),
+                ("background", Type::Asset { tags: Vec::from(["background"].map(String::from)) }),
+                ("stage position", Type::Enum(Vec::from(["close", "left third", "right third", "left", "center", "right", "far left", "mid left", "mid right", "far right", "far"].map(String::from)))),
             ].map(|(k, v)| (k.into(), v))),
             directives: BTreeMap::from([
                 ("page", Directive {