diff --git a/core/src/lib.rs b/core/src/lib.rs
index ebfe187dd..af76e1d90 100644
--- a/core/src/lib.rs
+++ b/core/src/lib.rs
@@ -31,8 +31,6 @@ extern crate grin_util as util;
 extern crate lazy_static;
 extern crate num_bigint as bigint;
 extern crate rand;
-extern crate grin_keychain as keychain;
-extern crate grin_util as util;
 extern crate serde;
 #[macro_use]
 extern crate serde_derive;
diff --git a/keychain/src/lib.rs b/keychain/src/lib.rs
index 950014129..97ac4c6fe 100644
--- a/keychain/src/lib.rs
+++ b/keychain/src/lib.rs
@@ -18,7 +18,6 @@ extern crate blake2_rfc as blake2;
 extern crate byteorder;
 extern crate grin_util as util;
 extern crate rand;
-extern crate grin_util as util;
 extern crate serde;
 extern crate serde_derive;
 extern crate serde_json;