1 files changed, 1 insertions, 1 deletions
diff --git a/perl.c b/perl.c
index cd8415ca09..1aff49da9f 100644
--- a/perl.c
+++ b/perl.c
@@ -1861,7 +1861,7 @@ S_parse_body(pTHX_ char **env, XSINIT_t xsinit)
 
 			opts = space - pv;
 			sv_insert(opts_prog, opts, 0,
-				  "\\n                       ", 25);
+				  STR_WITH_LEN("\\n                       "));
 		    }
 
 		    sv_catpvs(opts_prog,"\\n\",");