diff --git a/win_installer/src/app.rs b/win_installer/src/app.rs
index 1af7a04..ac5b299 100644
--- a/win_installer/src/app.rs
+++ b/win_installer/src/app.rs
@@ -340,7 +340,7 @@ impl App {
             }
             Mode::SetUserName => {
                 if let Ok(wim_sources) = self.state.wim_sources.lock()
-                    && let Some(index) = self.state.wim_image_index
+                    && let Some(index) = self.state.wim_file_index
                 {
                     let image = wim_sources.get_file(index);
                     if image.is_backup {