diff --git a/libips/src/repository/file_backend.rs b/libips/src/repository/file_backend.rs
index 4cae015..4e12f96 100644
--- a/libips/src/repository/file_backend.rs
+++ b/libips/src/repository/file_backend.rs
@@ -1695,9 +1695,23 @@ impl FileBackend {
         }
         Err(RepositoryError::NotFound(format!("manifest for {} not found", fmri)))
     }
-    /// Fetch legacy catalog content (stub)
-    pub fn fetch_legacy_catalog(&self, _publisher: &str, _filename: &str) -> Result<PathBuf> {
-        todo!("Implement legacy catalog format for REST API");
+    /// Fetch catalog file path
+    pub fn get_catalog_file_path(&self, publisher: &str, filename: &str) -> Result<PathBuf> {
+        if filename.contains('/') || filename.contains('\\') {
+            return Err(RepositoryError::PathPrefixError(filename.to_string()));
+        }
+
+        let catalog_dir = Self::construct_catalog_path(&self.path, publisher);
+        let path = catalog_dir.join(filename);
+
+        if path.exists() {
+            Ok(path)
+        } else {
+            Err(RepositoryError::NotFound(format!(
+                "Catalog file {} for publisher {} not found",
+                filename, publisher
+            )))
+        }
     }
 
     /// Save the legacy pkg5.repository INI file for backward compatibility
diff --git a/pkg6depotd/src/http/handlers/catalog.rs b/pkg6depotd/src/http/handlers/catalog.rs
index e9dae32..3d9b6af 100644
--- a/pkg6depotd/src/http/handlers/catalog.rs
+++ b/pkg6depotd/src/http/handlers/catalog.rs
@@ -13,7 +13,7 @@ pub async fn get_catalog_v1(
     Path((publisher, filename)): Path<(String, String)>,
     req: Request,
 ) -> Result<Response, DepotError> {
-    let path = repo.get_legacy_catalog(&publisher, &filename)?;
+    let path = repo.get_catalog_file_path(&publisher, &filename)?;
 
     let service = ServeFile::new(path);
     let result = service.oneshot(req).await;
diff --git a/pkg6depotd/src/repo.rs b/pkg6depotd/src/repo.rs
index 30ca92a..c3955d2 100644
--- a/pkg6depotd/src/repo.rs
+++ b/pkg6depotd/src/repo.rs
@@ -36,23 +36,11 @@ impl DepotRepo {
         backend.fetch_manifest_text(publisher, fmri).map_err(DepotError::Repo)
     }
 
-    pub fn get_legacy_catalog(&self, publisher: &str, filename: &str) -> Result<PathBuf> {
+    pub fn get_catalog_file_path(&self, publisher: &str, filename: &str) -> Result<PathBuf> {
         let backend = self.backend.lock().map_err(|e| DepotError::Server(format!("Lock poisoned: {}", e)))?;
-        backend.fetch_legacy_catalog(publisher, filename).map_err(DepotError::Repo)
+        backend.get_catalog_file_path(publisher, filename).map_err(DepotError::Repo)
     }
 
-    pub fn get_catalog_file_path(&self, publisher: &str, filename: &str) -> Option<PathBuf> {
-        if filename.contains('/') || filename.contains('\\') {
-            return None;
-        }
-        let catalog_dir = self.get_catalog_path(publisher);
-        let path = catalog_dir.join(filename);
-        if path.exists() {
-            Some(path)
-        } else {
-            None
-        }
-    }
 
     pub fn get_info(&self) -> Result<libips::repository::RepositoryInfo> {
         let backend = self.backend.lock().map_err(|e| DepotError::Server(format!("Lock poisoned: {}", e)))?;