diff --git a/jellyfish/__init__.py b/jellyfish/__init__.py
index 7834569..ca124f2 100644
--- a/jellyfish/__init__.py
+++ b/jellyfish/__init__.py
@@ -1,4 +1,6 @@
 try:
     from .cjellyfish import *   # noqa
+    library = "C"
 except ImportError:
     from ._jellyfish import *   # noqa
+    library = "Python"