diff --git a/zk-sdk/src/sigma_proofs/zero_ciphertext.rs b/zk-sdk/src/sigma_proofs/zero_ciphertext.rs
index 7629822..d79d834 100644
--- a/zk-sdk/src/sigma_proofs/zero_ciphertext.rs
+++ b/zk-sdk/src/sigma_proofs/zero_ciphertext.rs
@@ -103,6 +103,7 @@ impl ZeroCiphertextProof {
     ) -> Result<(), ZeroCiphertextProofVerificationError> {
         if elgamal_pubkey.get_point().is_identity()
             || ciphertext.commitment.get_point().is_identity()
+            || ciphertext.handle.get_point().is_identity()
         {
             return Err(SigmaProofVerificationError::IdentityPoint.into());
         }