diff --git a/src/circuit/expander_circuit.rs b/src/circuit/expander_circuit.rs
index faf80bb..14ce24f 100644
--- a/src/circuit/expander_circuit.rs
+++ b/src/circuit/expander_circuit.rs
@@ -1,4 +1,3 @@
-use core::panic;
 use std::fs;
 use std::io::Cursor;