diff --git a/src/calibre/devices/kobo/driver.py b/src/calibre/devices/kobo/driver.py
index 762a05d193..1171b74f5c 100644
--- a/src/calibre/devices/kobo/driver.py
+++ b/src/calibre/devices/kobo/driver.py
@@ -443,9 +443,9 @@ class KOBO(USBMS):
 
         # Reset Im_Reading list in the database
         if oncard == 'carda':
-            query= 'update content set ReadStatus=0, FirstTimeReading = \'true\' where BookID is Null and ContentID like \'file:///mnt/sd/%\''
+            query= 'update content set ReadStatus=0, FirstTimeReading = \'true\' where BookID is Null and ReadStatus = 1 and ContentID like \'file:///mnt/sd/%\''
         elif oncard != 'carda' and oncard != 'cardb':
-            query= 'update content set ReadStatus=0, FirstTimeReading = \'true\' where BookID is Null and ContentID not like \'file:///mnt/sd/%\''
+            query= 'update content set ReadStatus=0, FirstTimeReading = \'true\' where BookID is Null and ReadStatus = 1 and ContentID not like \'file:///mnt/sd/%\''
                     
         try:
             cursor.execute (query)