1 files changed, 1 insertions, 1 deletions

diff --git a/src/fileio.c b/src/fileio.c
index 038a0b87a2e..ff03046e3ca 100644
--- a/src/fileio.c
+++ b/src/fileio.c
@@ -3496,7 +3496,7 @@ This does code conversion according to the value of\n\
     total = READ_BUF_SIZE;
 
   if (NILP (visit) && total > 0)
-    prepare_to_modify_buffer (PT, PT);
+    prepare_to_modify_buffer (PT, PT, NULL);
 
   move_gap (PT);
   if (GAP_SIZE < total)