diff --git a/listframes.lua b/listframes.lua
index 58b183b..5a53343 100644
--- a/listframes.lua
+++ b/listframes.lua
@@ -3,6 +3,7 @@ local subFrames = {}
 local length = 0
 local frame = term.current()
 local drawEntry = nil
+local debugLog = fs.open("listframes.debug", "w")
 
 -- pagination start line (not number of entries!)
 local paginationPos = 1
@@ -58,7 +59,10 @@ local function redrawEntry(idx)
         local tw, th = frame.getSize()
         local xPos, yPos = entryFrame.getPosition()
         local xSize, ySize = entryFrame.getSize()
-        entryFrame.setVisible((yPos+ySize-1) >= paginationPos and yPos <= th)
+        local visibile = (yPos+ySize-1) >= paginationPos and yPos <= th
+        debugLog.writeLine("[redrawEntry] idx="..idx..", yPos="..yPos..", visible="..visibile)
+        debugLog.flush()
+        entryFrame.setVisible(visibile)
     end
 end