diff --git a/kabuki/cfgdlgs/cfgdlg2d.py b/kabuki/cfgdlgs/cfgdlg2d.py
index da3b2eb..b8a5686 100644
--- a/kabuki/cfgdlgs/cfgdlg2d.py
+++ b/kabuki/cfgdlgs/cfgdlg2d.py
@@ -7,6 +7,7 @@ class ConfigDialog2D(Column):
 
     def __init__(self):
         self.ti_cache_size = ti_cache_size = TextInput(value="", title="Cache size:")
+        ti_cache_size.disabled = True # 2D plot only shows the latest image
         super().__init__(ti_cache_size)