diff --git a/src/calibre/gui2/dialogs/match_books.py b/src/calibre/gui2/dialogs/match_books.py
index a64d9368d3..beea89a6b6 100644
--- a/src/calibre/gui2/dialogs/match_books.py
+++ b/src/calibre/gui2/dialogs/match_books.py
@@ -168,7 +168,7 @@ class MatchBooks(QDialog, Ui_MatchBooks):
             # have a width. Assume 25. Not a problem because user-changed column
             # widths will be remembered
             w = self.books_table.width() - 25 - self.books_table.verticalHeader().width()
-            w /= self.books_table.columnCount()
+            w //= self.books_table.columnCount()
             for c in range(0, self.books_table.columnCount()):
                 self.books_table.setColumnWidth(c, w)
         self.save_state()