diff --git a/Docs/src/bin/halibut/bk_xhtml.c b/Docs/src/bin/halibut/bk_xhtml.c
index 1200d07c..918e368b 100644
--- a/Docs/src/bin/halibut/bk_xhtml.c
+++ b/Docs/src/bin/halibut/bk_xhtml.c
@@ -966,28 +966,28 @@ static void xhtml_do_file(xhtmlfile * file)
 static void xhtml_do_top_file(xhtmlfile * file, paragraph * sourceform)
 {
   paragraph *p;
-  char fname[_MAX_PATH];
+  char fname[4096];
   int done = FALSE;
 
   FILE *fp = fopen(file->filename, "w");
   if (fp == NULL)
     fatal(err_cantopenw, file->filename);
 
-  ustrtoa(conf.chm_toc_file, fname, _MAX_PATH);
+  ustrtoa(conf.chm_toc_file, fname, 4096);
   if(*fname)
   {
     chm_toc = fopen(fname, "w");
     if (chm_toc == NULL)
-    fatal(err_cantopenw, fname);
+      fatal(err_cantopenw, fname);
   }
   else
     chm_toc = NULL;
 
-  ustrtoa(conf.chm_ind_file, fname, _MAX_PATH);
+  ustrtoa(conf.chm_ind_file, fname, 4096);
   if(*fname){
     chm_ind = fopen(fname, "w");
     if (chm_ind == NULL)
-    fatal(err_cantopenw, fname);
+      fatal(err_cantopenw, fname);
   }
   else
     chm_ind = NULL;