diff --git a/src/coding.c b/src/coding.c
index 62708fb60f4..2c1364d540d 100644
--- a/src/coding.c
+++ b/src/coding.c
@@ -4052,7 +4052,7 @@ code_convert_region (from, from_byte, to, to_byte, coding, encodep, adjust)
 	  len = ZV - BEGV;
 	  new = current_buffer;
 	  set_buffer_internal_1 (prev);
-	  del_range_2 (from, to, from_byte, to_byte);
+	  del_range_2 (from, from_byte, to, to_byte);
 	  insert_from_buffer (new, BEG, len, 0);
 	  to = from + len;
 	  to_byte = multibyte ? CHAR_TO_BYTE (to) : to;