1 files changed, 1 insertions, 1 deletions
diff --git a/src/nvim/undo.c b/src/nvim/undo.c
index 873970fc39..132c84231f 100644
--- a/src/nvim/undo.c
+++ b/src/nvim/undo.c
@@ -1179,7 +1179,7 @@ void u_write_undo(const char *const name, const bool forceit, buf_T *const buf,
   // allow the user to access the undo file.
   int perm = 0600;
   if (buf->b_ffname != NULL) {
-    perm = os_getperm((const char *)buf->b_ffname);
+    perm = os_getperm(buf->b_ffname);
     if (perm < 0) {
       perm = 0600;
     }