diff --git a/README.md b/README.md
index 1610e2b..8b02d39 100644
--- a/README.md
+++ b/README.md
@@ -3,6 +3,12 @@
 ## Documentation
 [API](http://moteus.github.com/lcurl)
 
+## Installation
+
+```
+luarocks install lcurl --server=https://rocks.moonscript.org/dev
+```
+
 ## Usage
 
 ```Lua
diff --git a/src/lcutils.c b/src/lcutils.c
index a436e69..331824d 100644
--- a/src/lcutils.c
+++ b/src/lcutils.c
@@ -98,7 +98,7 @@ void lcurl_util_slist_to_table(lua_State *L, struct curl_slist* list){
 }
 
 void lcurl_util_set_const(lua_State *L, const lcurl_const_t *reg){
-  lcurl_const_t *p;
+  const lcurl_const_t *p;
   for(p = reg; p->name; ++p){
     lua_pushstring(L, p->name);
     lua_pushnumber(L, p->value);