diff --git a/substrate/frame/contracts/src/exec.rs b/substrate/frame/contracts/src/exec.rs
index 9090aa9cb112..c26d82f7f110 100644
--- a/substrate/frame/contracts/src/exec.rs
+++ b/substrate/frame/contracts/src/exec.rs
@@ -100,7 +100,7 @@ impl<T: Config> Key<T> {
 /// Call or instantiate both called into other contracts and pass through errors happening
 /// in those to the caller. This enum is for the caller to distinguish whether the error
 /// happened during the execution of the callee or in the current execution context.
-#[cfg_attr(test, derive(Debug, PartialEq))]
+#[derive(Copy, Clone, PartialEq, Eq, Debug, codec::Decode, codec::Encode)]
 pub enum ErrorOrigin {
 	/// Caller error origin.
 	///
@@ -112,7 +112,7 @@ pub enum ErrorOrigin {
 }
 
 /// Error returned by contract execution.
-#[cfg_attr(test, derive(Debug, PartialEq))]
+#[derive(Copy, Clone, PartialEq, Eq, Debug, codec::Decode, codec::Encode)]
 pub struct ExecError {
 	/// The reason why the execution failed.
 	pub error: DispatchError,