diff --git a/config.def.h b/config.def.h
index 963821e..0b800bf 100644
--- a/config.def.h
+++ b/config.def.h
@@ -2,26 +2,28 @@ static const char *host      = "localhost";
 static const char *port      = "80";
 static const char *servedir  = ".";
 static const char *docindex  = "index.html";
-
 static const char *user      = "nobody";
 static const char *group     = "nogroup";
 
 static int         listdirs  = 1;
 static int         vhosts    = 0;
-static const int   maxnprocs = 512;
 
+static const int   maxnprocs = 512;
 #define HEADER_MAX 4096
 #define FIELD_MAX  200
 
+/* virtual hosts */
 static struct {
 	const char *name;
 	const char *regex;
 	const char *dir;
 	regex_t re;
 } vhost[] = {
-	{ "example.org", "^(www.)example.org$", "/example.org" },
+	/* canonical host    host regex                 directory      */
+	{ "example.org",     "^(www.)example.org$",     "/example.org" },
 };
 
+/* mime-types */
 static const struct {
 	char *ext;
 	char *type;