diff --git a/prices/src/lib.rs b/prices/src/lib.rs
index 777a2a4e9cc1aee939791a98c6bd4bc61c0d7a07..162af1d22ef2388d28d889727dd5999423e12b61 100644
--- a/prices/src/lib.rs
+++ b/prices/src/lib.rs
@@ -5,7 +5,7 @@ use palette_support::{decl_module, decl_storage, Parameter};
 use sr_primitives::traits::{MaybeSerializeDeserialize, Member, SimpleArithmetic, Zero};
 
 pub trait Trait: palette_system::Trait {
-	type CurrencyId: Parameter + Member + Default + Copy + MaybeSerializeDeserialize;
+	type CurrencyId: Parameter + Member + Copy + MaybeSerializeDeserialize;
 	type Price: Parameter + Member + Zero + SimpleArithmetic + Copy + Ord;
 	type Source: DataProvider<Self::CurrencyId, Self::Price>;
 }