diff --git a/README.md b/README.md
index ba952db..2e10465 100644
--- a/README.md
+++ b/README.md
@@ -20,7 +20,9 @@ Guide
     cp config/config.yml.sample config/config.yml
     vim config/config.yml  # follow instructions
     cat data/schema.sql | sqlite3 data/db.sqlite3
-    ...
+    mkdir logs
+    sudo chmod 0600 config/config.yml data/db.sqlite3
+    sudo chown www-data:www-data config/config.yml data data/db.sqlite3 logs
 
 ### Test
 
diff --git a/calefaction/eve/esi.py b/calefaction/eve/esi.py
index 7ac7672..e47dcdd 100644
--- a/calefaction/eve/esi.py
+++ b/calefaction/eve/esi.py
@@ -17,11 +17,11 @@ class _ESIQueryBuilder:
         self._path = "/"
 
     def __getattr__(self, item):
-        self._path += item + "/"
+        self._path += str(item) + "/"
         return self
 
     def __call__(self, item):
-        self._path += item + "/"
+        self._path += str(item) + "/"
         return self
 
     def get(self):