diff --git a/LICENSE.bigint b/LICENSE.bigint
index a84c395..3b27410 100644
--- a/LICENSE.bigint
+++ b/LICENSE.bigint
@@ -1,3 +1,6 @@
+The following is the license that came with the bigint code I'm using.
+It does *not* apply to the CEKF project as a whole.
+
 This is free and unencumbered software released into the public domain.
 
 Anyone is free to copy, modify, publish, use, compile, sell, or