diff --git a/src/gui_2.py b/src/gui_2.py
index 2632b8d0..ca9660e9 100644
--- a/src/gui_2.py
+++ b/src/gui_2.py
@@ -3944,7 +3944,7 @@ def render_text_viewer_window(app: App) -> None:
  """Renders the standalone text/code/markdown viewer window."""
  if not app.show_windows.get("Text Viewer", False): return
  imgui.set_next_window_size(imgui.ImVec2(900, 700), imgui.Cond_.first_use_ever)
- expanded, opened = imgui.begin(f"{app.text_viewer_title or 'Text Viewer'}###Text_Viewer", True, imgui.WindowFlags_.no_collapse)
+ expanded, opened = imgui.begin(f"{app.text_viewer_title or 'Text Viewer'}###Text Viewer", True, imgui.WindowFlags_.no_collapse)
  app.show_windows["Text Viewer"] = bool(opened)
  if not opened:
   app.ui_editing_slices_file = None