diff --git a/src/nvim/memline.c b/src/nvim/memline.c
index b8bee5a735..722830175d 100644
--- a/src/nvim/memline.c
+++ b/src/nvim/memline.c
@@ -2551,7 +2551,7 @@ int ml_delete_buf(buf_T *buf, linenr_T lnum, bool message)
   FUNC_ATTR_NONNULL_ALL
 {
   ml_flush_line(buf, false);
-  return ml_delete_int(buf, lnum, message);
+  return ml_delete_int(buf, lnum, message ? ML_DEL_MESSAGE : 0);
 }
 
 /// Delete line `lnum` in the current buffer.
diff --git a/src/nvim/terminal.c b/src/nvim/terminal.c
index 622e63a9db..e09bc47fb1 100644
--- a/src/nvim/terminal.c
+++ b/src/nvim/terminal.c
@@ -2132,11 +2132,11 @@ static void adjust_scrollback(Terminal *term, buf_T *buf)
   if (scbk < term->sb_current) {
     size_t diff = term->sb_current - scbk;
     for (size_t i = 0; i < diff; i++) {
-      ml_delete(1);
+      ml_delete_buf(buf, 1, false);
       term->sb_current--;
       xfree(term->sb_buffer[term->sb_current]);
     }
-    deleted_lines(1, (linenr_T)diff);
+    deleted_lines_buf(buf, 1, (linenr_T)diff);
   }
 
   // Resize the scrollback storage.