diff --git a/all-is-cubes-port/Cargo.toml b/all-is-cubes-port/Cargo.toml
index 1a73a6c0e..aa94c7689 100644
--- a/all-is-cubes-port/Cargo.toml
+++ b/all-is-cubes-port/Cargo.toml
@@ -75,7 +75,7 @@ stl_io = { version = "0.8.1", optional = true }
 serde_json = { workspace = true, optional = true }
 
 # glTF related dependencies
-base64 = { workspace = true, optional = true }
+base64 = { workspace = true, optional = true, features = ["alloc"] }
 bytemuck = { workspace = true, optional = true, features = ["derive"] }
 # gltf-json often has semver-incompatible changes, so pin it
 gltf-json = { version = ">=1.4.1, <1.5.0", optional = true, default-features = false, features = ["names", "KHR_materials_volume", "KHR_materials_transmission"] }
diff --git a/all-is-cubes-port/src/export.rs b/all-is-cubes-port/src/export.rs
index 180f9902c..6944dded6 100644
--- a/all-is-cubes-port/src/export.rs
+++ b/all-is-cubes-port/src/export.rs
@@ -1,4 +1,4 @@
-use std::ffi::OsString;
+#[allow(unused_imports)]
 use std::path::{Path, PathBuf};
 #[allow(unused_imports)]
 use std::{fs, io};
@@ -91,6 +91,7 @@ impl ExportSet {
     /// This has a suffix added for uniqueness (after the name but preserving the existing
     /// extension), based on the item's [`Handle::name()`], if the [`ExportSet`] contains more
     /// than one item. If it contains only one item, then `base_path` is returned unchanged.
+    #[cfg(feature = "stl")] // stl is the only exporter that does multi-file
     pub(crate) fn member_export_path(
         &self,
         base_path: &Path,
@@ -98,7 +99,7 @@ impl ExportSet {
     ) -> PathBuf {
         let mut path: PathBuf = base_path.to_owned();
         if self.contents.count() > 1 {
-            let mut new_file_name: OsString =
+            let mut new_file_name: std::ffi::OsString =
                 base_path.file_stem().expect("file name missing").to_owned();
             new_file_name.push("-");
             match member.name() {