diff --git a/src/nvim/undo.c b/src/nvim/undo.c
index f52850f6f3..ffd613cec2 100644
--- a/src/nvim/undo.c
+++ b/src/nvim/undo.c
@@ -1018,9 +1018,7 @@ static ExtmarkUndoObject *unserialize_extmark(bufinfo_T *bi, bool *error,
       goto error;
   }
 
-  if (buf) {
-    xfree(buf);
-  }
+  xfree(buf);
 
   return extup;