diff --git a/src/calibre/gui2/add.py b/src/calibre/gui2/add.py
index 37cb25ae2f..b54b885214 100644
--- a/src/calibre/gui2/add.py
+++ b/src/calibre/gui2/add.py
@@ -344,7 +344,7 @@ class Adder(QObject): # {{{
                         'books in smaller increments, until you '
                         'find the problem book.'), show=True)
 
-        if not self.continue_updating:
+        if self.continue_updating:
             QTimer.singleShot(200, self.update)