diff --git a/Cargo.toml b/Cargo.toml
index 54dce5c2..a90e325d 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -15,7 +15,6 @@ panic = "abort"
 
 [profile.release]
 lto = true
-opt-level = "s"
 panic = "abort"
 
 [dependencies]
diff --git a/src/main.rs b/src/main.rs
index 6b5d0c86..4448238b 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,6 +1,4 @@
 #![feature(process_exec)]
-#![feature(alloc_system)]
-extern crate alloc_system;
 
 #[macro_use]
 extern crate clap;