diff --git a/src/groups/mod.rs b/src/groups/mod.rs
index 329289e..db179e1 100644
--- a/src/groups/mod.rs
+++ b/src/groups/mod.rs
@@ -85,7 +85,7 @@ pub struct AffineG<P: GroupParams> {
     y: P::Base,
 }
 
-#[derive(Debug)]
+#[derive(Debug, PartialEq, Eq)]
 pub enum Error {
     NotOnCurve,
     NotInSubgroup,
diff --git a/src/lib.rs b/src/lib.rs
index b7d9709..83d5913 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -99,14 +99,14 @@ impl Mul for Fr {
     }
 }
 
-#[derive(Debug)]
+#[derive(Debug, Eq, PartialEq)]
 pub enum FieldError {
     InvalidSliceLength,
     InvalidU512Encoding,
     NotMember,
 }
 
-#[derive(Debug)]
+#[derive(Debug, Eq, PartialEq)]
 pub enum CurveError {
     InvalidEncoding,
     NotMember,