diff --git a/src/kernel/thread.rs b/src/kernel/thread.rs
index d4aedbc..298df68 100644
--- a/src/kernel/thread.rs
+++ b/src/kernel/thread.rs
@@ -104,17 +104,18 @@ fn start_thread_execution() {
 mod test {
 
     use super::{Thread, ThreadContext, NUM_INT_REGS, NUM_FP_REGS, ObjectType};
+    const DEFAULT_THREAD_NAME: &str = "test_thread";
 
     macro_rules! get_new_thread {
-        () => { Thread::new("test_thread") };
+        () => { Thread::new(DEFAULT_THREAD_NAME) };
         ($a:literal) => {
             Thread::new(&$a.to_string())
         };
     }
 
     macro_rules! expected_initial_state {
-        () => { expected_initial_state!("test_thread") };
-        ($a:literal) => { {
+        () => { expected_initial_state!(DEFAULT_THREAD_NAME) };
+        ($a:expr) => { {
             let mut x = Thread::new($a);
             x.name = $a.to_string();
             x.process = Option::None;