diff --git a/substrate/primitives/arithmetic/src/per_things.rs b/substrate/primitives/arithmetic/src/per_things.rs
index f10df9a1c2..554f3c3c21 100644
--- a/substrate/primitives/arithmetic/src/per_things.rs
+++ b/substrate/primitives/arithmetic/src/per_things.rs
@@ -299,7 +299,6 @@ macro_rules! implement_per_thing {
 				assert_eq!($name::from_percent(34) * 10u64, 3);
 				assert_eq!($name::from_percent(35) * 10u64, 3);
 				assert_eq!($name::from_percent(36) * 10u64, 4);
-				assert_eq!($name::from_percent(36) * 10u64, 4);
 			}
 
 			#[test]