diff --git a/multicodec.go b/multicodec.go
index 73839d5dd4ad39f82b07dafbe071c39c5b59ccc6..82bd90fe923fec802db26ffbd7cf15e1b919a3ea 100644
--- a/multicodec.go
+++ b/multicodec.go
@@ -8,8 +8,8 @@ import (
 )
 
 var (
-	_ ipld.Decode = Decode
-	_ ipld.Encode = Encode
+	_ ipld.Decoder = Decode
+	_ ipld.Encoder = Encode
 )
 
 func init() {