diff --git a/src/calibre/utils/imghdr.py b/src/calibre/utils/imghdr.py
index c899a5be95..c4070f072e 100644
--- a/src/calibre/utils/imghdr.py
+++ b/src/calibre/utils/imghdr.py
@@ -26,6 +26,10 @@ def what(file, h=None):
     finally:
         if f:
             f.close()
+    # There exist some jpeg files with no headers, only the starting two bits
+    # If we cannot identify as anything else, identify as jpeg.
+    if h[:2] == b'\xff\xd8':
+        return 'jpeg'
     return None