diff --git a/src/nvim/change.c b/src/nvim/change.c
index 4267429c25..b430f220d9 100644
--- a/src/nvim/change.c
+++ b/src/nvim/change.c
@@ -341,18 +341,14 @@ void appended_lines(linenr_T lnum, long count)
 /*
  * Like appended_lines(), but adjust marks first.
  */
-    void
-appended_lines_mark(linenr_T lnum, long count)
+void appended_lines_mark(linenr_T lnum, long count)
 {
-    // Skip mark_adjust when adding a line after the last one, there can't
-    // be marks there. But it's still needed in diff mode.
-    if (lnum + count < curbuf->b_ml.ml_line_count
-#ifdef FEAT_DIFF
-	    || curwin->w_p_diff
-#endif
-	)
-	mark_adjust(lnum + 1, (linenr_T)MAXLNUM, count, 0L);
-    changed_lines(lnum + 1, 0, lnum + 1, count);
+  // Skip mark_adjust when adding a line after the last one, there can't
+  // be marks there. But it's still needed in diff mode.
+  if (lnum + count < curbuf->b_ml.ml_line_count || curwin->w_p_diff) {
+    mark_adjust(lnum + 1, (linenr_T)MAXLNUM, count, 0L, false);
+  }
+  changed_lines(lnum + 1, 0, lnum + 1, count, true);
 }
 
 /*
diff --git a/src/nvim/misc1.c b/src/nvim/misc1.c
index f12fc574c7..9a4a01c0eb 100644
--- a/src/nvim/misc1.c
+++ b/src/nvim/misc1.c
@@ -1785,19 +1785,6 @@ int gchar_pos(pos_T *pos)
   return utf_ptr2char(ml_get_pos(pos));
 }
 
-/*
- * Like appended_lines(), but adjust marks first.
- */
-void appended_lines_mark(linenr_T lnum, long count)
-{
-  // Skip mark_adjust when adding a line after the last one, there can't
-  // be marks there. But it's still needed in diff mode.
-  if (lnum + count < curbuf->b_ml.ml_line_count || curwin->w_p_diff) {
-    mark_adjust(lnum + 1, (linenr_T)MAXLNUM, count, 0L, false);
-  }
-  changed_lines(lnum + 1, 0, lnum + 1, count, true);
-}
-
 /*
  * Deleted "count" lines at line "lnum" in the current buffer.
  * Must be called AFTER the change and after mark_adjust().