diff --git a/src/lsp/format.lsp b/src/lsp/format.lsp
index 07ca0c08e..78816eeea 100644
--- a/src/lsp/format.lsp
+++ b/src/lsp/format.lsp
@@ -543,7 +543,8 @@
                (form new-directives)
              (expand-directive (car remaining-directives)
                                (cdr remaining-directives))
-           (push form results)
+           (when form
+             (push form results))
            (setf remaining-directives new-directives)))
       (reverse results)))