diff --git a/spaceapi/utils.py b/spaceapi/utils.py
--- a/spaceapi/utils.py
+++ b/spaceapi/utils.py
@@ -20,8 +20,8 @@ def fuzzy_list_find(lst, key, value):
 
 
 def first(iterable, keys):
-    for el in keys:
-        if el in iterable:
-            return el
+    for key in keys:
+        if key in iterable:
+            return key
 
     raise ValueError