diff --git a/ll.rs b/ll.rs
index 5d30a67..0ead55d 100644
--- a/ll.rs
+++ b/ll.rs
@@ -1,4 +1,4 @@
-use core::libc::{c_char, c_void, size_t};
+use core::libc::{c_char, size_t};
 use core::libc::types::common::c99::uint32_t;
 
 #[nolink]
diff --git a/wapcaplet.rc b/wapcaplet.rc
index f36969a..67295d2 100644
--- a/wapcaplet.rc
+++ b/wapcaplet.rc
@@ -41,7 +41,7 @@ pub fn from_rust_string(s: &str) -> LwcString {
             require_ok(code);
         }
 
-        fail_unless!(interned_string.is_not_null());
+       assert!(interned_string.is_not_null());
 
         LwcString {
             string: interned_string