diff --git a/win_installer/src/app.rs b/win_installer/src/app.rs
index ac5b299..81439ad 100644
--- a/win_installer/src/app.rs
+++ b/win_installer/src/app.rs
@@ -234,16 +234,16 @@ impl App {
                     popup::Type::Info,
                     String::from("Updating boot configuration"),
                 ))?;
-                let wim_index = self
+                let wim_file_index = self
                     .state
-                    .wim_image_index
-                    .expect("Failed to get source WIM index");
+                    .wim_file_index
+                    .expect("Failed to get source WIM file index");
                 let wim_sources = self
                     .state
                     .wim_sources
                     .lock()
                     .expect("Failed to get WIM Sources");
-                let wim_file = wim_sources.get_file(wim_index);
+                let wim_file = wim_sources.get_file(wim_file_index);
 
                 // Get System32 path
                 let system32 = get_system32_path(&self.action_tx);