diff --git a/sdcard/3ds/ctruLua/examples/example.lua b/sdcard/3ds/ctruLua/examples/example.lua
index 1c2a307..67ed406 100644
--- a/sdcard/3ds/ctruLua/examples/example.lua
+++ b/sdcard/3ds/ctruLua/examples/example.lua
@@ -10,6 +10,7 @@ local angle = 0
 
 local texture1 = gfx.texture.load(ctr.root.."icon.png");
 if not texture1 then error("Giants ducks came from another planet") end
+local tWidth, tHeight = texture1:getSize()
 
 gfx.color.setBackground(gfx.color.RGBA8(200, 200, 200))
 gfx.set3D(true)
@@ -66,7 +67,7 @@ while ctr.run() do
 		gfx.text(5, 17, "Hello world, from Lua ! éàçù", 20, gfx.color.RGBA8(0, 0, 0))
 		gfx.text(5, 50, "Time: "..os.date())
 		
-		texture1:draw(280, 80, angle);
+		texture1:draw(280, 80, angle, tWidth/2, tHeight/2);
 
 		local cx, cy = hid.circle()
 		gfx.rectangle(40, 90, 60, 60, 0, 0xDDDDDDFF)
diff --git a/source/apt.c b/source/apt.c
index e860736..bcbc26b 100644
--- a/source/apt.c
+++ b/source/apt.c
@@ -107,6 +107,30 @@ static int apt_getMenuAppID(lua_State *L) {
 	return 1;
 }
 
+/***
+Allow or not the system to enter sleep mode.
+@function setSleepAllowed
+@tparam boolean allowed `true` to allow, `false` to disallow
+*/
+static int apt_setSleepAllowed(lua_State *L) {
+	bool allowed = lua_toboolean(L, 1);
+	
+	aptSetSleepAllowed(allowed);
+	
+	return 0;
+}
+
+/***
+Check if sleep mode is allowed.
+@function isSleepAllowed
+@treturn boolean `true` is allowed, false if not.
+*/
+static int apt_isSleepAllowed(lua_State *L) {
+	lua_pushboolean(L, aptIsSleepAllowed());
+	
+	return 1;
+}
+
 static const struct luaL_Reg apt_lib[] = {
 	{"openSession",         apt_openSession        },
 	{"closeSession",        apt_closeSession       },
@@ -117,6 +141,8 @@ static const struct luaL_Reg apt_lib[] = {
 	{"setStatusPower",      apt_setStatusPower     },
 	{"signalReadyForSleep", apt_signalReadyForSleep},
 	{"getMenuAppID",        apt_getMenuAppID       },
+	{"setSleepAllowed",     apt_setSleepAllowed    },
+	{"isSleepAllowed",      apt_isSleepAllowed     },
 	{NULL, NULL}
 };
 
diff --git a/source/font.c b/source/font.c
index bac5c44..1110432 100644
--- a/source/font.c
+++ b/source/font.c
@@ -189,4 +189,6 @@ void unload_font_lib(lua_State *L) {
 
 	if (luaL_testudata(L, -1, "LFont") != NULL)
 		sftd_free_font(((font_userdata *)lua_touserdata(L, -1))->font); // Unload current font
+	
+	lua_pop(L, 1);
 }
diff --git a/source/httpc.c b/source/httpc.c
index d114445..87c826d 100644
--- a/source/httpc.c
+++ b/source/httpc.c
@@ -174,13 +174,14 @@ static int httpc_downloadData(lua_State *L) {
 	
 	ret = httpcDownloadData(context, buff, size, NULL);
 	if (ret != 0) {
+		free(buff);
 		lua_pushnil(L);
 		lua_pushinteger(L, ret);
 		return 2;
 	}
 	
 	lua_pushstring(L, (char*)buff);
-	//free(buff); FIXME we need to free this buffer at some point ?
+	free(buff);
 	//lua_pushinteger(L, size); // only for test purposes.
 	return 1;
 }
diff --git a/source/ptm.c b/source/ptm.c
index 5401fe3..125e0ea 100644
--- a/source/ptm.c
+++ b/source/ptm.c
@@ -45,13 +45,13 @@ static int ptm_shutdown(lua_State *L) {
 /***
 Return the shell state.
 @function getShellState
-@treturn number shell state
+@treturn boolean shell state, `true` if open, `false` if closed.
 */
 static int ptm_getShellState(lua_State *L) {
 	u8 out = 0;
 	PTMU_GetShellState(&out);
 	
-	lua_pushinteger(L, out);
+	lua_pushboolean(L, out);
 	
 	return 1;
 }