diff --git a/vmbase/src/hvc/trng.rs b/vmbase/src/hvc/trng.rs
index 6331d66..1a27d64 100644
--- a/vmbase/src/hvc/trng.rs
+++ b/vmbase/src/hvc/trng.rs
@@ -16,7 +16,7 @@
 use core::result;
 
 /// Standard SMCCC TRNG error values as described in DEN 0098 1.0 REL0.
-#[derive(Debug, Clone)]
+#[derive(Debug, Clone, PartialEq)]
 pub enum Error {
     /// The call is not supported by the implementation.
     NotSupported,