Fix bug in default extension identifier

astropy · Feb 14, 2019 · f807bc3 · f807bc3
1 parent 28b4ed8
commit f807bc3
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/specutils/io/registers.py b/specutils/io/registers.py
@@ -59,7 +59,7 @@ def decorator(func):
                              "explicit identifier. Creating identifier using "
                              "list of compatible extensions".format(
                                  label, dtype.__name__))
-                id_func = lambda *args, **kwargs: any([args[0].endswith(x)
+                id_func = lambda *args, **kwargs: any([args[1].endswith(x)
                                                           for x in extensions])
             # Otherwise, create a dummy identifier
             else: