diff --git a/src/calibre/gui2/main.py b/src/calibre/gui2/main.py
index 8393414518..fbdf26987b 100644
--- a/src/calibre/gui2/main.py
+++ b/src/calibre/gui2/main.py
@@ -973,12 +973,13 @@ class Main(MainWindow, Ui_MainWindow, DeviceGUI):
     def auto_convert(self, row_ids, on_card, format):
         previous = self.library_view.currentIndex()
 
-        jobs, changed = convert_single_ebook(self, self.library_view.model().db, row_ids, True)
+        jobs, changed, bad = convert_single_ebook(self, self.library_view.model().db, row_ids, True)
         if jobs == []: return
         for func, args, desc, fmt, id, temp_files in jobs:
-            job = self.job_manager.run_job(Dispatcher(self.book_auto_converted),
+            if id not in bad:
+                job = self.job_manager.run_job(Dispatcher(self.book_auto_converted),
                                         func, args=args, description=desc)
-            self.conversion_jobs[job] = (temp_files, fmt, id, on_card)
+                self.conversion_jobs[job] = (temp_files, fmt, id, on_card)
 
         if changed:
             self.library_view.model().refresh_rows(rows)
@@ -1021,12 +1022,13 @@ class Main(MainWindow, Ui_MainWindow, DeviceGUI):
         previous = self.library_view.currentIndex()
         rows = [x.row() for x in \
                 self.library_view.selectionModel().selectedRows()]
-        jobs, changed = convert_single_ebook(self,
+        jobs, changed, bad = convert_single_ebook(self,
                 self.library_view.model().db, row_ids)
         for func, args, desc, fmt, id, temp_files in jobs:
-            job = self.job_manager.run_job(Dispatcher(self.book_converted),
+            if id not in bad:
+                job = self.job_manager.run_job(Dispatcher(self.book_converted),
                                             func, args=args, description=desc)
-            self.conversion_jobs[job] = (temp_files, fmt, id)
+                self.conversion_jobs[job] = (temp_files, fmt, id)
 
         if changed:
             self.library_view.model().refresh_rows(rows)
diff --git a/src/calibre/gui2/tools.py b/src/calibre/gui2/tools.py
index d035a56d34..1b217af86c 100644
--- a/src/calibre/gui2/tools.py
+++ b/src/calibre/gui2/tools.py
@@ -33,7 +33,7 @@ def convert_single_ebook(parent, db, row_ids, auto_conversion=False):
             if auto_conversion:
                 result = QDialog.Accepted
             else:
-                retult = d.exec_()
+                result = d.exec_()
             
             if result == QDialog.Accepted:
                 mi = db.get_metadata(row_id, True)
@@ -67,7 +67,7 @@ def convert_single_ebook(parent, db, row_ids, auto_conversion=False):
         msg = _('<p>Could not convert %d of %d books, because no suitable source format was found.<ul>%s</ul>')%(len(res), total, '\n'.join(res))
         warning_dialog(parent, _('Could not convert some books'), msg).exec_()
 
-    return jobs, changed
+    return jobs, changed, bad
 
 
 def convert_bulk_ebooks(*args):