diff --git a/src/calibre/gui2/device.py b/src/calibre/gui2/device.py
index ea86885484..3540575f81 100644
--- a/src/calibre/gui2/device.py
+++ b/src/calibre/gui2/device.py
@@ -1030,6 +1030,7 @@ class DeviceMixin(object): # {{{
                     total_size = sum([os.stat(f).st_size for f in files])
                 except:
                     try:
+                        import traceback
                         traceback.print_exc()
                     except:
                         pass