diff --git a/src/gui.py b/src/gui.py
index d0b9d1e..b2df465 100644
--- a/src/gui.py
+++ b/src/gui.py
@@ -280,10 +280,6 @@ class AppGUI:
         )
         self.scan_stop_btn.pack(side=tk.LEFT, padx=2)
         
-        # Test button
-        ttk.Button(btn_frame, text="Test", width=4,
-                  command=self._test_displacement).pack(side=tk.LEFT, padx=2)
-        
         # Mosaic button
         ttk.Button(sf, text="Mosaic", width=6,
                   command=self._show_mosaic_window).pack(side=tk.RIGHT, padx=2)