diff --git a/src/modes/diff.rs b/src/modes/diff.rs
index 1b18181..cbc3aa9 100644
--- a/src/modes/diff.rs
+++ b/src/modes/diff.rs
@@ -23,10 +23,6 @@ fn validate_diff_args(cmd: &mut Command, ids: &Vec<i64>, tags: &Vec<String>) ->
 /// * `cmd` - Command instance for error reporting
 /// * `ids` - Vector of item IDs
 /// * `tags` - Vector of tags (should be empty for diff mode)
-///
-/// # Returns
-///
-/// * `Result<()>` - Success if validation passes, error with validation message
 fn validate_diff_args(cmd: &mut Command, ids: &Vec<i64>, tags: &Vec<String>) {
     if !tags.is_empty() {
         cmd.error(
@@ -97,4 +93,9 @@ fn setup_diff_paths_and_compression(
     let item_b_id = item_b.item.id.ok_or_else(|| anyhow::anyhow!("Item B missing ID"))?;
 
     // Use the service's data path to construct proper file paths
-    let data_path = item_service.get_data
\ No newline at end of file
+    let data_path = item_service.get_data_path();
+    let item_a_path = data_path.join(item_a_id.to_string());
+    let item_b_path = data_path.join(item_b_id.to_string());
+
+    Ok((item_a_path, item_b_path))
+}