diff --git a/rtv/terminal.py b/rtv/terminal.py
index ef97000..9d8d3d1 100644
--- a/rtv/terminal.py
+++ b/rtv/terminal.py
@@ -813,7 +813,7 @@ class Terminal(object):
 
         # Prune empty lines at the bottom of the textbox.
         for item in stack[::-1]:
-            if item:
+            if not item:
                 stack.pop()
             else:
                 break