diff --git a/src/main.rs b/src/main.rs
index a29b6e1..c90b42f 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -79,22 +79,22 @@ fn parse_config(conf: String, pool: &mut Vec<robot::Robot>) -> Result<world::Wor
         if !empty_line.is_empty() {
             return Err("This line should be empty !");
         }
-        let a = match lines.next() {
+        let raw_setup = match lines.next() {
             None => return Err("This line should be the config !"),
             Some(raw) => raw,
         };
-        if a.is_empty() {
+        if raw_setup.is_empty() {
             return Err("This line should not be empty !");
         }
-        let b = match lines.next() {
+        let raw_inst = match lines.next() {
             None => return Err("This line should be the instruction !"),
             Some(raw) => raw,
         };
-        if b.is_empty() {
+        if raw_inst.is_empty() {
             return Err("Thi line should not be empty !");
         }
-        println!("{}", a);
-        println!("{}", b);
+        println!("{}", raw_setup);
+        println!("{}", raw_inst);
     }
     Ok(world::World { x, y })
 }