diff --git a/src/libregexp/lib9.h.std b/src/libregexp/lib9.h.std
deleted file mode 100644
index d022656d..00000000
--- a/src/libregexp/lib9.h.std
+++ /dev/null
@@ -1,6 +0,0 @@
-#include <fmt.h>
-#include <setjmp.h>
-#include <string.h>
-#include <stdlib.h>
-#include <unistd.h>
-