diff --git a/src/robot.rs b/src/robot.rs
index d8c37e2..33d787d 100644
--- a/src/robot.rs
+++ b/src/robot.rs
@@ -215,19 +215,6 @@ mod tests {
         assert_eq!(r.p.y, 3);
     }
 
-    #[test]
-    fn is_instructions_test() {
-        let s = "FFLRLRF";
-        assert!(is_instructions(&s));
-    }
-
-    #[test]
-    #[should_panic]
-    fn is_instructions_test_fail() {
-        let s = "SZDASWQ";
-        assert!(is_instructions(&s));
-    }
-
     #[test]
     fn test_piouf() {
         let mut r: Robot = Robot::new(