diff --git a/src/gui/lua/lua_api_version.h b/src/gui/lua/lua_api_version.h
index 55b19f4e0..5787eb162 100644
--- a/src/gui/lua/lua_api_version.h
+++ b/src/gui/lua/lua_api_version.h
@@ -4,4 +4,4 @@
  * to luainstance.h changes
  */
 #define LUA_API_VERSION_MAJOR 1
-#define LUA_API_VERSION_MINOR 70
+#define LUA_API_VERSION_MINOR 71
diff --git a/src/gui/lua/lua_cc_window.cpp b/src/gui/lua/lua_cc_window.cpp
index 2225797bc..819fe18d2 100644
--- a/src/gui/lua/lua_cc_window.cpp
+++ b/src/gui/lua/lua_cc_window.cpp
@@ -220,7 +220,10 @@ int CLuaInstCCWindow::CCWindowSetCaption(lua_State *L)
 	std::string name = "";
 	tableLookup(L, "name", name) || tableLookup(L, "title", name) || tableLookup(L, "caption", name);
 
-	D->w->setWindowCaption(name);
+	lua_Integer alignment = (lua_Integer)CTextBox::NO_AUTO_LINEBREAK;
+	tableLookup(L, "alignment", alignment);
+
+	D->w->setWindowCaption(name, alignment | (lua_Integer)CTextBox::NO_AUTO_LINEBREAK);
 	return 0;
 }
 
diff --git a/src/gui/lua/luainstance.cpp b/src/gui/lua/luainstance.cpp
index 9adfa1d4e..1ff783904 100644
--- a/src/gui/lua/luainstance.cpp
+++ b/src/gui/lua/luainstance.cpp
@@ -383,22 +383,35 @@ static void set_lua_variables(lua_State *L)
 		{ NULL, 0 }
 	};
 
+	/*
+	 * possible text allignment modes usable for window header caption
+	 * API: >= v1.71
+	*/
+	table_key text_alignment[] =
+	{
+		{ "DEFAULT",		(lua_Integer)CTextBox::NO_AUTO_LINEBREAK},
+		{ "CENTER",		(lua_Integer)CTextBox::CENTER},
+		{ "RIGHT",		(lua_Integer)CTextBox::RIGHT},
+		{ NULL, 0 }
+	};
+
 	/* list of environment variable arrays to be exported */
 	lua_envexport e[] =
 	{
-		{ "RC",		keyname },
-		{ "SCREEN",	screenopts },
-		{ "FONT",	fontlist },
-		{ "CORNER",	corners },
-		{ "OFFSET",	offsets },
-		{ "MENU_RETURN", menureturn },
-		{ "APIVERSION",  apiversion },
-		{ "PLAYSTATE",   playstate },
-		{ "CC",          ccomponents },
-		{ "DYNFONT",     dynfont },
-		{ "CURL",        curl_status },
-		{ "NMODE",       neutrino_mode },
-		{ "POSTMSG",     post_msg },
+		{ "RC",			keyname },
+		{ "SCREEN",		screenopts },
+		{ "FONT",		fontlist },
+		{ "CORNER",		corners },
+		{ "OFFSET",		offsets },
+		{ "MENU_RETURN", 	menureturn },
+		{ "APIVERSION",  	apiversion },
+		{ "PLAYSTATE",   	playstate },
+		{ "CC",          	ccomponents },
+		{ "DYNFONT",     	dynfont },
+		{ "CURL",        	curl_status },
+		{ "NMODE",       	neutrino_mode },
+		{ "POSTMSG",     	post_msg },
+		{ "TEXT_ALIGNMENT",	text_alignment },
 		{ NULL, NULL }
 	};