diff --git a/libavcodec/mjpegbdec.c b/libavcodec/mjpegbdec.c
index b70311b795..3e4946bd10 100644
--- a/libavcodec/mjpegbdec.c
+++ b/libavcodec/mjpegbdec.c
@@ -129,7 +129,6 @@ read_header:
         if (s->bottom_field != s->interlace_polarity && second_field_offs)
         {
             buf_ptr = buf + second_field_offs;
-            second_field_offs = 0;
             goto read_header;
             }
     }