diff --git a/build.rs b/build.rs
index 60d504f9..10012ece 100644
--- a/build.rs
+++ b/build.rs
@@ -52,7 +52,6 @@ fn cache_bust() {
     let config = BusterBuilder::default()
         .source("./static/cache/")
         .result("./assets")
-        .copy(true)
         .no_hash(no_hash)
         .follow_links(true)
         .build()
diff --git a/src/tests-migrate.rs b/src/tests-migrate.rs
index 31c4aea0..27e08557 100644
--- a/src/tests-migrate.rs
+++ b/src/tests-migrate.rs
@@ -77,7 +77,6 @@ fn cache_bust() {
         .source("./static/cache")
         .result("./assets")
         .mime_types(types)
-        .copy(true)
         .follow_links(true)
         .build()
         .unwrap();